# POP Cloud API Documentation > POP generates fiscal documents (SdI, PEPPOL, KSeF, PDF, ZUGFeRD) from a single shared payload and > delivers them through active integrations. This index lists every guide, API reference page, and > monthly release-notes entry. > Italian and English have full coverage; other languages currently cover a subset of guides. > See llms-full.txt for the full text of every page. ## Italian (it) ### getting-started - [Cosa fa il plugin POP su WooCommerce](https://docs.popapi.io/it/guides/getting-started/what-the-plugin-does): Panoramica di cosa configura automaticamente POP su WooCommerce per la fatturazione elettronica. - [Creare un account POP e attivare SdI/PEPPOL parlando con un assistente AI](https://docs.popapi.io/it/guides/getting-started/onboard-via-ai-assistant): Usare i tool di onboarding del server MCP remoto per registrarti e configurare l'account POP in chat, senza aprire il sito. - [FAQ: POP for Shopify](https://docs.popapi.io/it/guides/getting-started/shopify-faq): Risposte rapide alle domande più comuni su fiscalità, dati cliente e limiti dell'app POP for Shopify. - [Generare fatture senza un account POP](https://docs.popapi.io/it/guides/getting-started/anonymous-generation): Come generare XML, PDF e altri documenti fiscali senza license_key, fino a 1000 generazioni gratuite al mese. - [Le fatture XML generate dal plugin: formato e limiti](https://docs.popapi.io/it/guides/getting-started/xml-invoices-generated): Cosa contiene l'XML FatturaPA generato da POP e cosa serve in più per inviarlo allo SDI. - [Ottenere la license_key per l'API POP](https://docs.popapi.io/it/guides/getting-started/get-your-license-key): Come attivare l'account e ottenere la chiave da usare con l'API POP. - [Prima installazione e configurazione guidata del plugin](https://docs.popapi.io/it/guides/getting-started/first-installation): Come installare il plugin POP su WooCommerce e completare il wizard di configurazione iniziale. - [Quale canale di invio scegliere: SdI via POP, Fatture in Cloud, Aruba, SdI via PEC, PEPPOL, KSeF, Zoho](https://docs.popapi.io/it/guides/getting-started/choosing-an-invoicing-integration): Confronto tra i canali di invio fatture elettroniche disponibili in POP, per scegliere quello più adatto. - [Requisiti minimi per installare il plugin POP](https://docs.popapi.io/it/guides/getting-started/minimum-requirements): Versioni minime di PHP, WordPress e WooCommerce richieste dal plugin POP. ### configuration - [Aggiungere personalizzazioni a POP con il plugin Code Snippets](https://docs.popapi.io/it/guides/configuration/custom-code-snippets): Come inserire in sicurezza piccoli snippet PHP (es. sugli hook wc_el_inv-*) senza modificare il tema. - [Attivare l'inversione contabile (reverse charge) per le vendite estere](https://docs.popapi.io/it/guides/configuration/reverse-charge): Come configurare POP per applicare o togliere l'IVA in base alla residenza fiscale del cliente. - [Campi fiscali POP su carrello per store Shopify non-Plus](https://docs.popapi.io/it/guides/configuration/shopify-non-plus-billing-fields): Come aggiungere i campi P.IVA/Codice Fiscale/PEC al carrello tramite lo script pop-noplus-embed.js. - [Campi Partita IVA e Codice Fiscale nel checkout Shopify](https://docs.popapi.io/it/guides/configuration/shopify-checkout-vat-tax-code-fields): Come rendere obbligatori o visibili i campi fiscali POP nel checkout per clienti UE ed extra-UE. - [Come aggiornare il plugin POP](https://docs.popapi.io/it/guides/configuration/update-plugin): Procedura standard per aggiornare il plugin POP su WordPress e cosa verificare dopo l'update. - [Come funzionano numerazione fattura e generazione XML in base allo stato ordine](https://docs.popapi.io/it/guides/configuration/invoice-numbering-and-order-status): Quando POP assegna il numero fattura e genera l'XML in base ai cambi di stato dell'ordine WooCommerce. - [Come POP gestisce i dati fiscali del cliente su Shopify](https://docs.popapi.io/it/guides/configuration/shopify-fiscal-data-management): Priorità tra metafield app.pop_* e customAttributes, e dove correggere i dati fiscali di un ordine. - [Configurare l'inversione contabile (reverse charge) su Shopify](https://docs.popapi.io/it/guides/configuration/shopify-reverse-charge): Come impostare natura IVA/codice esenzione per le cinque categorie cliente gestite da POP. - [Configurare la numerazione delle fatture su Shopify](https://docs.popapi.io/it/guides/configuration/shopify-invoice-numbering): Come impostare formato, prefisso, suffisso e numero di partenza della numerazione fattura POP. - [Dati bancari in fattura per pagamenti con bonifico](https://docs.popapi.io/it/guides/configuration/shopify-bank-transfer-payment): Come far comparire beneficiario, banca e IBAN in fattura quando l'ordine è pagato con bonifico. - [Dati del trasmittente in fattura elettronica](https://docs.popapi.io/it/guides/configuration/transmitter-data): Come e quando compilare i dati facoltativi del trasmittente/intermediario nella tab General di POP. - [Dati fiscali del venditore (override indirizzo emittente) su Shopify](https://docs.popapi.io/it/guides/configuration/shopify-seller-fiscal-data): Come sostituire l'indirizzo di fatturazione di Shopify con i dati fiscali del venditore nei documenti POP. - [Dove vengono salvati i file XML/PDF generati e come proteggerli](https://docs.popapi.io/it/guides/configuration/generated-files-storage): Percorsi di salvataggio dei documenti generati da POP e come impedirne l'accesso pubblico diretto. - [Email con fattura XML/PDF e ricevuta allegate all'ordine completato](https://docs.popapi.io/it/guides/configuration/order-completed-emails): Come attivare/disattivare le email WooCommerce di POP che allegano XML, PDF fattura e PDF ricevuta. - [Fatturazione in base al regime fiscale: cosa cambia tra Ordinario e Forfettario](https://docs.popapi.io/it/guides/configuration/tax-regime-invoicing-rules): Tabella di riferimento su IVA e codici natura da applicare in base al regime fiscale del venditore e al tipo di cliente. - [Gestire gli ordini Shopify con importo totale zero](https://docs.popapi.io/it/guides/configuration/shopify-zero-amount-orders): Come evitare che POP generi documenti o numerazioni per ordini a totale zero. - [Importare/esportare la configurazione del plugin tra due installazioni](https://docs.popapi.io/it/guides/configuration/import-export-settings): Come copiare le impostazioni di POP da un sito WordPress a un altro tramite import/export. - [Impostare l'IVA in WooCommerce senza problemi di arrotondamento in fattura](https://docs.popapi.io/it/guides/configuration/woocommerce-tax-settings): Perché conviene usare prezzi al netto dell'IVA in WooCommerce e cosa succede se usi prezzi IVA inclusa. - [Impostare la marca da bollo virtuale in fattura](https://docs.popapi.io/it/guides/configuration/virtual-stamp-duty): Come e quando POP applica la marca da bollo virtuale da 2€ sulle fatture italiane senza IVA. - [Inviare la fattura/ricevuta pro-forma via email al cliente](https://docs.popapi.io/it/guides/configuration/pro-forma-invoice-email): Come allegare il PDF pro-forma all'email di ordine completato di WooCommerce, e quando non è possibile. - [Invio automatico della fattura PDF via email su Shopify](https://docs.popapi.io/it/guides/configuration/shopify-auto-email-invoice): Come attivare l'invio automatico del PDF fattura al cliente e in copia al merchant, e come funziona il reply-to. - [Nomi dei campi di fatturazione aggiunti da POP al checkout](https://docs.popapi.io/it/guides/configuration/checkout-field-names): Elenco dei campi billing_* che POP aggiunge a checkout e My Account, utile per temi e integrazioni custom. - [Numero fattura e stato POP nei report Shopify (es. Report Pundit)](https://docs.popapi.io/it/guides/configuration/shopify-order-metafields-reporting): Come leggere numero fattura, numero nota di credito e stato di invio come metafield nativi dell'ordine Shopify. - [Personalizzare il PDF della fattura su Shopify](https://docs.popapi.io/it/guides/configuration/shopify-customize-invoice-pdf): Come impostare footer, logo e nome file del PDF generato da POP. - [Progressivo file: il contatore usato nel nome del documento](https://docs.popapi.io/it/guides/configuration/shopify-file-progressive-number): Come funziona e come resettare il progressivo usato nel nome del file XML/PDF generato da POP. - [Usare l'ambiente sandbox per i test](https://docs.popapi.io/it/guides/configuration/use-sandbox-environment): Come testare l'API POP senza consumare crediti reali. ### troubleshooting - [Come eliminare una fattura generata da POP](https://docs.popapi.io/it/guides/troubleshooting/delete-an-invoice): Perché non esiste un'azione diretta per eliminare una fattura, e come farlo tramite l'ordine collegato. - [Correggere l'indirizzo di fatturazione di un ordine già creato (Shopify)](https://docs.popapi.io/it/guides/troubleshooting/shopify-billing-address-override): Come usare i metafield ordine per correggere l'indirizzo cliente prima dell'invio a SdI/PEPPOL. - [Generare una nota di credito senza disallineare la fattura originale](https://docs.popapi.io/it/guides/troubleshooting/credit-note-generation): Procedura corretta per creare una nota di credito da un rimborso WooCommerce collegato a una fattura già inviata. - [Ho esaurito i crediti/quota inclusi: cosa succede e come verificare lo stato](https://docs.popapi.io/it/guides/troubleshooting/quota-and-overquota): Cosa significa "quota esaurita", come controllare lo stato del tuo account e cosa fare per continuare a generare documenti. - [L'amministratore riceve email di errore quando una fattura non viene creata](https://docs.popapi.io/it/guides/troubleshooting/admin-error-email-notifications): Perché POP invia automaticamente email all'admin del sito in caso di errori di generazione/invio fattura. - [La fattura SDI viene rifiutata: cause comuni e fix](https://docs.popapi.io/it/guides/troubleshooting/sdi-invoice-rejected): Checklist rapida per capire perché SDI rifiuta una fattura e come correggerla. - [La fattura Shopify non riflette una modifica ordine](https://docs.popapi.io/it/guides/troubleshooting/shopify-order-edit-invoice-mismatch): Perché un PDF/XML già generato può non aggiornarsi subito dopo un edit ordine, e come farlo allineare. - [Pagamento SEPA Direct Debit (SDD): perché l'addebito non è immediato](https://docs.popapi.io/it/guides/troubleshooting/sepa-direct-debit-payments): Perché un pagamento SDD attiva subito la membership ma l'addebito effettivo arriva dopo alcuni giorni. ### integrations - [Allegare il PDF di Fatture in Cloud alle email dell'ordine](https://docs.popapi.io/it/guides/integrations/fatture-in-cloud-pdf-email): Come far usare al plugin il PDF generato da Fatture in Cloud invece del PDF standard di POP nelle email cliente. - [Attivare e usare la sincronizzazione nativa con Zoho](https://docs.popapi.io/it/guides/integrations/zoho): Come attivare il canale nativo Zoho su WordPress e Shopify, inviare fatture/note di credito e cosa succede in sandbox. - [Attivare KSeF via POP](https://docs.popapi.io/it/guides/integrations/ksef): Come collegare il tuo account POP al sistema KSeF polacco per l'invio di fatture elettroniche. - [Attivare l'invio PEPPOL da WordPress o Shopify](https://docs.popapi.io/it/guides/integrations/peppol): Come attivare e automatizzare l'invio di fatture elettroniche tramite la rete PEPPOL. - [Attivare l'invio SDI nativo (SDI via POP)](https://docs.popapi.io/it/guides/integrations/sdi-via-pop): Come attivare l'invio di fatture elettroniche allo SDI direttamente dal plugin POP, senza addon di terze parti. - [Capire il ciclo di invio fattura Aruba e l'email pro forma](https://docs.popapi.io/it/guides/integrations/aruba-invoice-flow): Cosa succede dopo l'invio di una fattura ad Aruba e quando il cliente riceve automaticamente la fattura pro forma via email. - [Collegare i metodi di pagamento tra WooCommerce e Fatture in Cloud](https://docs.popapi.io/it/guides/integrations/fatture-in-cloud-payment-methods): Come mappare i gateway di pagamento WooCommerce ai metodi di pagamento di Fatture in Cloud nell'add-on POP. - [Collegare POP a n8n](https://docs.popapi.io/it/guides/integrations/n8n): Usare il nodo ufficiale n8n per generare fatture SdI/PEPPOL, verificarle e validare partite IVA. - [Configurare l'integrazione Webhook](https://docs.popapi.io/it/guides/integrations/webhook): Inviare automaticamente i documenti generati da POP a Zapier, Make, CRM o storage esterni. - [Configurare l'invio allo SDI via PEC](https://docs.popapi.io/it/guides/integrations/sdi-via-pec): Come configurare la casella PEC e l'invio automatico per trasmettere fatture elettroniche allo SDI tramite PEC. - [Connettere Aruba a WooCommerce e attivare l'invio automatico](https://docs.popapi.io/it/guides/integrations/aruba-connect): Come collegare il tuo account di fatturazione Aruba a WooCommerce e configurare l'invio automatico delle fatture. - [Connettere Fatture in Cloud a WooCommerce](https://docs.popapi.io/it/guides/integrations/fatture-in-cloud-connect): Come collegare l'account Fatture in Cloud, scegliere i permessi di accesso e impostare il centro di ricavo. - [Creare i corrispettivi dalle ricevute con l'add-on Fatture in Cloud](https://docs.popapi.io/it/guides/integrations/fatture-in-cloud-corrispettivi): Cosa fa e cosa NON fa l'add-on POP to Fatture in Cloud (Corrispettivi). - [Far leggere le tue fatture POP a un assistente AI (WordPress Abilities e WP-CLI)](https://docs.popapi.io/it/guides/integrations/wordpress-invoice-abilities): Esporre ricerca e recupero di fatture/note di credito POP già generate su WooCommerce, PMPro o Paid Member Subscriptions a un assistente AI o da riga di comando. - [Fatturare gli abbonamenti di Paid Member Subscriptions (Cozmoslabs) con POP](https://docs.popapi.io/it/guides/integrations/paid-member-subscriptions): Come attivare l'integrazione POP per Paid Member Subscriptions e generare fatture elettroniche per gli abbonamenti. - [Fatturare gli abbonamenti di Paid Memberships Pro con POP](https://docs.popapi.io/it/guides/integrations/paid-memberships-pro): Come attivare l'integrazione POP per Paid Memberships Pro e generare fatture elettroniche per gli abbonamenti. - [Fatturazione elettronica in Francia (gov-fr)](https://docs.popapi.io/it/guides/integrations/france-peppol): Cosa serve e come funziona l'attivazione della fatturazione elettronica francese con POP. - [Invio automatico e test XML con l'addon Fatture in Cloud](https://docs.popapi.io/it/guides/integrations/fatture-in-cloud-auto-send): Come configurare l'invio automatico delle fatture a Fatture in Cloud e come generare un XML di prova prima di andare in produzione. - [Scegliere il corridoio documentale per la Germania (ZUGFeRD o PEPPOL)](https://docs.popapi.io/it/guides/integrations/zugferd): Come attivare e cambiare il corridoio documentale tedesco (ZUGFeRD o PEPPOL) per un account POP. - [Sincronizzare fatture con Zoho tramite il nodo n8n dedicato](https://docs.popapi.io/it/guides/integrations/n8n-zoho): Come installare e configurare il pacchetto ufficiale n8n-nodes-pop-zoho per creare fatture/note di credito Zoho da POP. - [Sincronizzare il magazzino con Fatture in Cloud](https://docs.popapi.io/it/guides/integrations/fatture-in-cloud-warehouse-sync): Come collegare i prodotti WooCommerce a Fatture in Cloud e mantenere lo stock sincronizzato tra i due sistemi. - [Usare POP da un assistente AI (MCP)](https://docs.popapi.io/it/guides/integrations/mcp): Installare e configurare il server MCP ufficiale per generare e gestire fatture da Claude Desktop o altri client MCP. - [Usare POP da un assistente AI senza installazione (MCP remoto)](https://docs.popapi.io/it/guides/integrations/mcp-remote): Collegare Claude o altri client MCP al server remoto hosted di POP, senza installare nulla in locale. ### changelog - [Dove trovare il changelog del plugin WordPress](https://docs.popapi.io/it/guides/changelog/wordpress-plugin): Come consultare le novità e le correzioni della versione installata del plugin POP. - [Dove trovare il changelog dell'app POP for Shopify](https://docs.popapi.io/it/guides/changelog/shopify-app): Come consultare le novità e le correzioni della versione installata dell'app POP for Shopify. ### api - [Connector (n8n)](https://docs.popapi.io/it/api/connectors): Inoltrare un payload POP a un servizio esterno tramite un webhook n8n registrato. - [Generazione PDF](https://docs.popapi.io/it/api/pdf): Generare (ed eventualmente inviare via email) il PDF di un documento POP. - [Integrazione nativa Zoho](https://docs.popapi.io/it/api/zoho): Canale di sincronizzazione diretta verso Zoho Invoice/Zoho Books, alternativo al connector n8n. - [KSeF FA(3) XML](https://docs.popapi.io/it/api/ksef): Generare e, quando serve, inviare fattura KSeF (Polonia) dall'API POP. - [Onboarding API](https://docs.popapi.io/it/api/onboarding): Login headless e setup account per integrazioni MCP, LLM ed esterne. - [PEPPOL BIS / UBL XML](https://docs.popapi.io/it/api/peppol): Generare fattura UBL PEPPOL dall'API POP. - [POP Cloud API — panoramica](https://docs.popapi.io/it/api/overview): Base URL, autenticazione e primi passi per usare l'API POP. - [SdI / FatturaPA XML](https://docs.popapi.io/it/api/sdi): Generare fattura elettronica italiana SdI dall'API POP. - [ZUGFeRD / Factur-X](https://docs.popapi.io/it/api/zugferd): Generare il bundle ZUGFeRD (PDF visuale + XML EN16931 + PDF ibrido). ### release-notes - [Settembre 2026](https://docs.popapi.io/it/release-notes/): Onboarding più semplice, sicurezza rafforzata e POP arriva in Belgio - [Agosto 2026](https://docs.popapi.io/it/release-notes/): Si genera anche senza account, e la Francia ha il suo canale ufficiale - [Luglio 2026](https://docs.popapi.io/it/release-notes/): Zoho nativo, PEPPOL in altri 23 paesi e l'app Shopify in polacco - [Giugno 2026](https://docs.popapi.io/it/release-notes/): Debutta ZUGFeRD per la Germania e KSeF si completa per la Polonia - [Maggio 2026](https://docs.popapi.io/it/release-notes/): Arriva il sandbox e debutta la fatturazione elettronica polacca - [Aprile 2026](https://docs.popapi.io/it/release-notes/): Vendite OSS automatiche in tutta l'Unione Europea - [Marzo 2026](https://docs.popapi.io/it/release-notes/): Le fatture PDF arrivano in altri quattro mercati europei ## English (en) ### getting-started - [Create a POP account and activate SdI/PEPPOL by talking to an AI assistant](https://docs.popapi.io/en/guides/getting-started/onboard-via-ai-assistant): Use the remote MCP server's onboarding tools to sign up and configure your POP account in chat, without opening the website. - [FAQ: POP for Shopify](https://docs.popapi.io/en/guides/getting-started/shopify-faq): Quick answers to the most common questions about taxation, customer data, and limits of the POP for Shopify app. - [First installation and guided setup of the plugin](https://docs.popapi.io/en/guides/getting-started/first-installation): How to install the POP plugin on WooCommerce and complete the initial setup wizard. - [Generating invoices without a POP account](https://docs.popapi.io/en/guides/getting-started/anonymous-generation): How to generate XML, PDF, and other fiscal documents without a license_key, up to 1000 free generations a month. - [Getting the license_key for the POP API](https://docs.popapi.io/en/guides/getting-started/get-your-license-key): How to activate your account and get the key to use with the POP API. - [Minimum requirements to install the POP plugin](https://docs.popapi.io/en/guides/getting-started/minimum-requirements): Minimum PHP, WordPress, and WooCommerce versions required by the POP plugin. - [What the POP plugin does on WooCommerce](https://docs.popapi.io/en/guides/getting-started/what-the-plugin-does): Overview of what POP automatically configures on WooCommerce for e-invoicing. - [Which transmission channel to choose: SdI via POP, Fatture in Cloud, Aruba, SdI via PEC, PEPPOL, KSeF, Zoho](https://docs.popapi.io/en/guides/getting-started/choosing-an-invoicing-integration): Comparison of the e-invoice transmission channels available in POP, to help you pick the right one. - [XML invoices generated by the plugin: format and limits](https://docs.popapi.io/en/guides/getting-started/xml-invoices-generated): What the FatturaPA XML generated by POP contains and what's still needed to send it to the SDI. ### configuration - [Activating reverse charge for foreign sales](https://docs.popapi.io/en/guides/configuration/reverse-charge): How to configure POP to apply or remove VAT based on the customer's tax residence. - [Adding customizations to POP with the Code Snippets plugin](https://docs.popapi.io/en/guides/configuration/custom-code-snippets): How to safely insert small PHP snippets (e.g. on the wc_el_inv-* hooks) without editing the theme. - [Automatic email delivery of the PDF invoice on Shopify](https://docs.popapi.io/en/guides/configuration/shopify-auto-email-invoice): How to enable automatic email delivery of the PDF invoice to the customer and in copy to the merchant, and how the reply-to works. - [Bank details on the invoice for bank transfer payments](https://docs.popapi.io/en/guides/configuration/shopify-bank-transfer-payment): How to show the beneficiary, bank, and IBAN on the invoice when the order is paid by bank transfer. - [Billing field names added by POP at checkout](https://docs.popapi.io/en/guides/configuration/checkout-field-names): List of the billing_* fields that POP adds to checkout and My Account, useful for themes and custom integrations. - [Configuring invoice numbering on Shopify](https://docs.popapi.io/en/guides/configuration/shopify-invoice-numbering): How to set the format, prefix, suffix, and starting number of POP's invoice numbering. - [Configuring reverse charge on Shopify](https://docs.popapi.io/en/guides/configuration/shopify-reverse-charge): How to set the VAT nature/exemption code for the five customer categories managed by POP. - [Customizing the invoice PDF on Shopify](https://docs.popapi.io/en/guides/configuration/shopify-customize-invoice-pdf): How to set the footer, logo, and file name of the PDF generated by POP. - [Document progressive: the counter used in the document name](https://docs.popapi.io/en/guides/configuration/shopify-file-progressive-number): How the progressive number used in the XML/PDF file name generated by POP works, and how to reset it. - [Emails with XML/PDF invoice and receipt attached on order completion](https://docs.popapi.io/en/guides/configuration/order-completed-emails): How to enable/disable POP's WooCommerce emails that attach XML, PDF invoice, and PDF receipt. - [How invoice numbering and XML generation work based on order status](https://docs.popapi.io/en/guides/configuration/invoice-numbering-and-order-status): When POP assigns the invoice number and generates the XML based on WooCommerce order status changes. - [How POP manages customer fiscal data on Shopify](https://docs.popapi.io/en/guides/configuration/shopify-fiscal-data-management): Priority between app.pop_* metafields and customAttributes, and where to fix an order's fiscal data. - [How to update the POP plugin](https://docs.popapi.io/en/guides/configuration/update-plugin): Standard procedure for updating the POP plugin on WordPress and what to check after the update. - [Importing/exporting the plugin configuration between two installations](https://docs.popapi.io/en/guides/configuration/import-export-settings): How to copy POP's settings from one WordPress site to another using import/export. - [Invoice number and POP status in Shopify reports (e.g. Report Pundit)](https://docs.popapi.io/en/guides/configuration/shopify-order-metafields-reporting): How to read invoice number, credit note number, and delivery status as native Shopify order metafields. - [Invoicing based on tax regime: what changes between Ordinary and Forfettario](https://docs.popapi.io/en/guides/configuration/tax-regime-invoicing-rules): Reference table on VAT and nature codes to apply based on the seller's tax regime and the customer type. - [Managing Shopify orders with a zero total amount](https://docs.popapi.io/en/guides/configuration/shopify-zero-amount-orders): How to prevent POP from generating documents or numbering for zero-total orders. - [POP fiscal fields on cart for non-Plus Shopify stores](https://docs.popapi.io/en/guides/configuration/shopify-non-plus-billing-fields): How to add the VAT number/Tax Code/PEC fields to the cart via the pop-noplus-embed.js script. - [Seller billing details (issuer address override) on Shopify](https://docs.popapi.io/en/guides/configuration/shopify-seller-fiscal-data): How to replace Shopify's billing address with the seller's fiscal data in POP documents. - [Sending the pro-forma invoice/receipt to the customer by email](https://docs.popapi.io/en/guides/configuration/pro-forma-invoice-email): How to attach the pro-forma PDF to WooCommerce's order-completed email, and when it's not possible. - [Setting up VAT in WooCommerce without invoice rounding issues](https://docs.popapi.io/en/guides/configuration/woocommerce-tax-settings): Why it's best to use tax-exclusive prices in WooCommerce, and what happens if you use tax-inclusive prices. - [Setting up virtual stamp duty on invoices](https://docs.popapi.io/en/guides/configuration/virtual-stamp-duty): How and when POP applies the €2 virtual stamp duty (marca da bollo) on Italian invoices without VAT. - [Transmitter data on the e-invoice](https://docs.popapi.io/en/guides/configuration/transmitter-data): How and when to fill in the optional transmitter/intermediary data in POP's General tab. - [Using the sandbox environment for testing](https://docs.popapi.io/en/guides/configuration/use-sandbox-environment): How to test the POP API without consuming real credits. - [VAT number and Tax Code fields in the Shopify checkout](https://docs.popapi.io/en/guides/configuration/shopify-checkout-vat-tax-code-fields): How to make POP's fiscal fields required or visible at checkout for EU and non-EU customers. - [Where generated XML/PDF files are stored and how to protect them](https://docs.popapi.io/en/guides/configuration/generated-files-storage): Storage paths for documents generated by POP and how to prevent direct public access to them. ### troubleshooting - [Correcting the billing address of an already-created order (Shopify)](https://docs.popapi.io/en/guides/troubleshooting/shopify-billing-address-override): How to use order metafields to correct the customer's address before sending to SdI/PEPPOL. - [Generating a credit note without misaligning it from the original invoice](https://docs.popapi.io/en/guides/troubleshooting/credit-note-generation): The correct procedure to create a credit note from a WooCommerce refund linked to an already-sent invoice. - [How to delete an invoice generated by POP](https://docs.popapi.io/en/guides/troubleshooting/delete-an-invoice): Why there's no direct action to delete an invoice, and how to do it via the linked order. - [I've run out of included credits/quota: what happens and how to check your status](https://docs.popapi.io/en/guides/troubleshooting/quota-and-overquota): What "quota exhausted" means, how to check your account status, and what to do to keep generating documents. - [SEPA Direct Debit (SDD) payment: why the charge isn't immediate](https://docs.popapi.io/en/guides/troubleshooting/sepa-direct-debit-payments): Why an SDD payment activates the membership right away but the actual charge arrives a few days later. - [The administrator receives error emails when an invoice isn't created](https://docs.popapi.io/en/guides/troubleshooting/admin-error-email-notifications): Why POP automatically sends error emails to the site admin when invoice generation/transmission fails. - [The SDI invoice gets rejected: common causes and fixes](https://docs.popapi.io/en/guides/troubleshooting/sdi-invoice-rejected): A quick checklist to understand why SDI rejects an invoice and how to fix it. - [The Shopify invoice doesn't reflect an order edit](https://docs.popapi.io/en/guides/troubleshooting/shopify-order-edit-invoice-mismatch): Why an already-generated PDF/XML may not update right after an order edit, and how to align it. ### integrations - [Activating and using native sync with Zoho](https://docs.popapi.io/en/guides/integrations/zoho): How to activate the native Zoho channel on WordPress and Shopify, send invoices/credit notes, and what happens in sandbox. - [Activating KSeF via POP](https://docs.popapi.io/en/guides/integrations/ksef): How to link your POP account to the Polish KSeF system for sending electronic invoices. - [Activating native SDI sending (SDI via POP)](https://docs.popapi.io/en/guides/integrations/sdi-via-pop): How to activate sending electronic invoices to the SDI directly from the POP plugin, without third-party addons. - [Activating PEPPOL sending from WordPress or Shopify](https://docs.popapi.io/en/guides/integrations/peppol): How to activate and automate sending electronic invoices via the PEPPOL network. - [Attaching the Fatture in Cloud PDF to order emails](https://docs.popapi.io/en/guides/integrations/fatture-in-cloud-pdf-email): How to make the plugin use the PDF generated by Fatture in Cloud instead of POP's standard PDF in customer emails. - [Automatic sending and XML testing with the Fatture in Cloud addon](https://docs.popapi.io/en/guides/integrations/fatture-in-cloud-auto-send): How to configure automatic invoice sending to Fatture in Cloud and how to generate a test XML before going live. - [Choosing the document corridor for Germany (ZUGFeRD or PEPPOL)](https://docs.popapi.io/en/guides/integrations/zugferd): How to activate and change the German document corridor (ZUGFeRD or PEPPOL) for a POP account. - [Configuring SDI sending via PEC](https://docs.popapi.io/en/guides/integrations/sdi-via-pec): How to configure the PEC mailbox and automatic sending to transmit electronic invoices to the SDI via PEC. - [Configuring the Webhook integration](https://docs.popapi.io/en/guides/integrations/webhook): Automatically send documents generated by POP to Zapier, Make, a CRM, or external storage. - [Connecting Aruba to WooCommerce and enabling automatic sending](https://docs.popapi.io/en/guides/integrations/aruba-connect): How to link your Aruba invoicing account to WooCommerce and configure automatic invoice sending. - [Connecting Fatture in Cloud to WooCommerce](https://docs.popapi.io/en/guides/integrations/fatture-in-cloud-connect): How to link your Fatture in Cloud account, choose access permissions, and set the revenue center. - [Connecting POP to n8n](https://docs.popapi.io/en/guides/integrations/n8n): Use the official n8n node to generate SdI/PEPPOL invoices, verify them, and validate VAT numbers. - [Creating corrispettivi from receipts with the Fatture in Cloud add-on](https://docs.popapi.io/en/guides/integrations/fatture-in-cloud-corrispettivi): What the POP to Fatture in Cloud (Corrispettivi) add-on does and does NOT do. - [Electronic invoicing in France (gov-fr)](https://docs.popapi.io/en/guides/integrations/france-peppol): What you need and how activation works for French electronic invoicing with POP. - [Invoicing Paid Member Subscriptions (Cozmoslabs) subscriptions with POP](https://docs.popapi.io/en/guides/integrations/paid-member-subscriptions): How to activate the POP integration for Paid Member Subscriptions and generate e-invoices for subscriptions. - [Invoicing Paid Memberships Pro subscriptions with POP](https://docs.popapi.io/en/guides/integrations/paid-memberships-pro): How to activate the POP integration for Paid Memberships Pro and generate electronic invoices for memberships. - [Letting an AI assistant read your POP invoices (WordPress Abilities and WP-CLI)](https://docs.popapi.io/en/guides/integrations/wordpress-invoice-abilities): Expose search and retrieval of POP invoices/credit notes already generated on WooCommerce, PMPro, or Paid Member Subscriptions to an AI assistant or from the command line. - [Linking payment methods between WooCommerce and Fatture in Cloud](https://docs.popapi.io/en/guides/integrations/fatture-in-cloud-payment-methods): How to map WooCommerce payment gateways to Fatture in Cloud payment methods in the POP add-on. - [Syncing invoices to Zoho via the dedicated n8n node](https://docs.popapi.io/en/guides/integrations/n8n-zoho): How to install and configure the official n8n-nodes-pop-zoho package to create Zoho invoices/credit notes from POP. - [Syncing stock with Fatture in Cloud](https://docs.popapi.io/en/guides/integrations/fatture-in-cloud-warehouse-sync): How to link WooCommerce products to Fatture in Cloud and keep stock in sync between the two systems. - [Understanding the Aruba invoice sending cycle and the pro forma email](https://docs.popapi.io/en/guides/integrations/aruba-invoice-flow): What happens after an invoice is sent to Aruba, and when the customer automatically receives the pro forma invoice by email. - [Using POP from an AI assistant (MCP)](https://docs.popapi.io/en/guides/integrations/mcp): Install and configure the official MCP server to generate and manage invoices from Claude Desktop or other MCP clients. - [Using POP from an AI assistant with no install (remote MCP)](https://docs.popapi.io/en/guides/integrations/mcp-remote): Connect Claude or other MCP clients to POP's hosted remote server, without installing anything locally. ### changelog - [Where to find the changelog for the POP for Shopify app](https://docs.popapi.io/en/guides/changelog/shopify-app): How to check what's new and what's been fixed in the installed version of the POP for Shopify app. - [Where to find the WordPress plugin changelog](https://docs.popapi.io/en/guides/changelog/wordpress-plugin): How to check what's new and what's been fixed in the installed version of the POP plugin. ### api - [Connector (n8n)](https://docs.popapi.io/en/api/connectors): Forward a POP payload to an external service through a registered n8n webhook. - [KSeF FA(3) XML](https://docs.popapi.io/en/api/ksef): Generate, and when needed send, a KSeF (Poland) invoice from the POP API. - [Native Zoho Integration](https://docs.popapi.io/en/api/zoho): Direct sync channel to Zoho Invoice/Zoho Books, an alternative to the n8n connector. - [Onboarding API](https://docs.popapi.io/en/api/onboarding): Headless login and account setup for MCP, LLM, and external integrations. - [PDF Generation](https://docs.popapi.io/en/api/pdf): Generate (and optionally email) the PDF of a POP document. - [PEPPOL BIS / UBL XML](https://docs.popapi.io/en/api/peppol): Generate a PEPPOL UBL invoice from the POP API. - [POP Cloud API — Overview](https://docs.popapi.io/en/api/overview): Base URL, authentication, and first steps for using the POP API. - [SdI / FatturaPA XML](https://docs.popapi.io/en/api/sdi): Generate Italian SdI e-invoice XML from the POP API. - [ZUGFeRD / Factur-X](https://docs.popapi.io/en/api/zugferd): Generate the ZUGFeRD bundle (visual PDF + EN16931 XML + hybrid PDF). ### release-notes - [September 2026](https://docs.popapi.io/en/release-notes/): Simpler onboarding, stronger security, and POP arrives in Belgium - [August 2026](https://docs.popapi.io/en/release-notes/): Generate without an account, and France gets its own official channel - [July 2026](https://docs.popapi.io/en/release-notes/): Native Zoho, PEPPOL in 23 more countries, and the Shopify app in Polish - [June 2026](https://docs.popapi.io/en/release-notes/): ZUGFeRD debuts for Germany, and KSeF is completed for Poland - [May 2026](https://docs.popapi.io/en/release-notes/): Sandbox mode arrives, and Polish e-invoicing debuts - [April 2026](https://docs.popapi.io/en/release-notes/): Automatic OSS sales handling across the European Union - [March 2026](https://docs.popapi.io/en/release-notes/): PDF invoices reach four more European markets ## French (fr) ### getting-started - [FAQ : POP pour Shopify](https://docs.popapi.io/fr/guides/getting-started/shopify-faq): Réponses rapides aux questions les plus courantes sur la fiscalité, les données client et les limites de l'app POP pour Shopify. - [Quel canal de transmission choisir : SdI via POP, Fatture in Cloud, Aruba, SdI via PEC, PEPPOL, KSeF, Zoho](https://docs.popapi.io/fr/guides/getting-started/choosing-an-invoicing-integration): Comparaison des canaux de transmission de factures électroniques disponibles dans POP, pour vous aider à choisir le bon. ### integrations - [Activer l'envoi PEPPOL depuis WordPress ou Shopify](https://docs.popapi.io/fr/guides/integrations/peppol): Comment activer et automatiser l'envoi de factures électroniques via le réseau PEPPOL. - [Configurer l'intégration Webhook](https://docs.popapi.io/fr/guides/integrations/webhook): Envoyer automatiquement les documents générés par POP vers Zapier, Make, un CRM ou un stockage externe. - [Facturation électronique en France (gov-fr)](https://docs.popapi.io/fr/guides/integrations/france-peppol): Ce qu'il faut savoir et comment fonctionne l'activation de la facturation électronique française avec POP. ## German (de) ### getting-started - [FAQ: POP für Shopify](https://docs.popapi.io/de/guides/getting-started/shopify-faq): Kurze Antworten auf die häufigsten Fragen zu Steuern, Kundendaten und Grenzen der POP-für-Shopify-App. - [Welchen Übermittlungskanal wählen: SdI via POP, Fatture in Cloud, Aruba, SdI via PEC, PEPPOL, KSeF, Zoho](https://docs.popapi.io/de/guides/getting-started/choosing-an-invoicing-integration): Vergleich der in POP verfügbaren Kanäle für die Übermittlung elektronischer Rechnungen, um Ihnen bei der richtigen Wahl zu helfen. ### integrations - [PEPPOL-Versand von WordPress oder Shopify aktivieren](https://docs.popapi.io/de/guides/integrations/peppol): So aktivieren und automatisieren Sie den Versand elektronischer Rechnungen über das PEPPOL-Netzwerk. - [Webhook-Integration konfigurieren](https://docs.popapi.io/de/guides/integrations/webhook): Von POP erzeugte Dokumente automatisch an Zapier, Make, ein CRM oder externen Speicher senden. ## Spanish (es) ### getting-started - [FAQ: POP para Shopify](https://docs.popapi.io/es/guides/getting-started/shopify-faq): Respuestas rápidas a las preguntas más comunes sobre fiscalidad, datos de clientes y límites de la app POP para Shopify. - [Qué canal de transmisión elegir: SdI via POP, Fatture in Cloud, Aruba, SdI via PEC, PEPPOL, KSeF, Zoho](https://docs.popapi.io/es/guides/getting-started/choosing-an-invoicing-integration): Comparativa de los canales de transmisión de facturas electrónicas disponibles en POP, para ayudarte a elegir el adecuado. ### integrations - [Configurar la integración de Webhook](https://docs.popapi.io/es/guides/integrations/webhook): Enviar automáticamente los documentos generados por POP a Zapier, Make, un CRM o un almacenamiento externo. ## Dutch (nl) ### getting-started - [Veelgestelde vragen: POP voor Shopify](https://docs.popapi.io/nl/guides/getting-started/shopify-faq): Snelle antwoorden op de meest gestelde vragen over belastingen, klantgegevens en beperkingen van de POP voor Shopify-app. - [Welk verzendkanaal kiezen: SdI via POP, Fatture in Cloud, Aruba, SdI via PEC, PEPPOL, KSeF, Zoho](https://docs.popapi.io/nl/guides/getting-started/choosing-an-invoicing-integration): Vergelijking van de in POP beschikbare kanalen voor het verzenden van elektronische facturen, om u te helpen de juiste te kiezen. ### integrations - [De Webhook-integratie configureren](https://docs.popapi.io/nl/guides/integrations/webhook): Automatisch door POP gegenereerde documenten verzenden naar Zapier, Make, een CRM of externe opslag. - [PEPPOL-verzending activeren vanuit WordPress of Shopify](https://docs.popapi.io/nl/guides/integrations/peppol): Hoe u het verzenden van elektronische facturen via het PEPPOL-netwerk activeert en automatiseert. ## Polish (pl) ### getting-started - [FAQ: POP dla Shopify](https://docs.popapi.io/pl/guides/getting-started/shopify-faq): Szybkie odpowiedzi na najczęstsze pytania dotyczące podatków, danych klientów i ograniczeń aplikacji POP dla Shopify. - [Który kanał transmisji wybrać: SdI via POP, Fatture in Cloud, Aruba, SdI via PEC, PEPPOL, KSeF, Zoho](https://docs.popapi.io/pl/guides/getting-started/choosing-an-invoicing-integration): Porównanie kanałów transmisji faktur elektronicznych dostępnych w POP, które pomoże wybrać właściwy. ### integrations - [Aktywacja KSeF przez POP](https://docs.popapi.io/pl/guides/integrations/ksef): Jak połączyć konto POP z polskim systemem KSeF w celu wysyłki faktur elektronicznych. - [Konfiguracja integracji Webhook](https://docs.popapi.io/pl/guides/integrations/webhook): Automatyczne wysyłanie dokumentów wygenerowanych przez POP do Zapier, Make, CRM lub zewnętrznego magazynu.