> For the complete documentation index, see [llms.txt](https://developer.nilvera.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://developer.nilvera.com/en/api/e-invoice-api/purchase-invoices.md).

# Purchase Invoices

- [List Purchase Invoices](https://developer.nilvera.com/en/api/e-invoice-api/purchase-invoices/list-purchase-invoices.md)
- [Retrieve the HTML of the Invoice](https://developer.nilvera.com/en/api/e-invoice-api/purchase-invoices/retrieve-the-html-of-the-invoice.md)
- [Retrieve the PDF of the Invoice](https://developer.nilvera.com/en/api/e-invoice-api/purchase-invoices/retrieve-the-pdf-of-the-invoice.md)
- [Retrieve the XML of the Invoice](https://developer.nilvera.com/en/api/e-invoice-api/purchase-invoices/retrieve-the-xml-of-the-invoice.md)
- [Assign Tags to Invoice](https://developer.nilvera.com/en/api/e-invoice-api/purchase-invoices/assign-tags-to-invoice.md)
- [Retrieve Tag Information of the Invoice](https://developer.nilvera.com/en/api/e-invoice-api/purchase-invoices/retrieve-tag-information-of-the-invoice.md)
- [Retrieve Transaction History](https://developer.nilvera.com/en/api/e-invoice-api/purchase-invoices/retrieve-transaction-history.md)
- [Retrieve Details](https://developer.nilvera.com/en/api/e-invoice-api/purchase-invoices/retrieve-details.md)
- [Retrieves Taxes](https://developer.nilvera.com/en/api/e-invoice-api/purchase-invoices/retrieves-taxes.md)
- [List Invoice Attachments](https://developer.nilvera.com/en/api/e-invoice-api/purchase-invoices/list-invoice-attachments.md)
- [Retrieve Despatch Note Information](https://developer.nilvera.com/en/api/e-invoice-api/purchase-invoices/retrieve-despatch-note-information.md)
- [Retrieve Email Transaction History](https://developer.nilvera.com/en/api/e-invoice-api/purchase-invoices/retrieve-email-transaction-history.md)
- [Retrieve WhatsApp Transaction History](https://developer.nilvera.com/en/api/e-invoice-api/purchase-invoices/retrieve-whatsapp-transaction-history.md)
- [Retrieve SMS Transaction History](https://developer.nilvera.com/en/api/e-invoice-api/purchase-invoices/retrieve-sms-transaction-history.md)
- [Retrieve Email Activities](https://developer.nilvera.com/en/api/e-invoice-api/purchase-invoices/retrieve-email-activities.md)
- [Export Invoices in Bulk](https://developer.nilvera.com/en/api/e-invoice-api/purchase-invoices/export-invoices-in-bulk.md)
- [Assign New Status to Invoices](https://developer.nilvera.com/en/api/e-invoice-api/purchase-invoices/assign-new-status-to-invoices.md)
- [Send the Invoice via Email](https://developer.nilvera.com/en/api/e-invoice-api/purchase-invoices/send-the-invoice-via-email.md)
- [Send the Invoice via WhatsApp](https://developer.nilvera.com/en/api/e-invoice-api/purchase-invoices/send-the-invoice-via-whatsapp.md)
- [Send the Invoice via SMS](https://developer.nilvera.com/en/api/e-invoice-api/purchase-invoices/send-the-invoice-via-sms.md)
- [Verify the Invoice with GİB](https://developer.nilvera.com/en/api/e-invoice-api/purchase-invoices/verify-the-invoice-with-gib.md)
- [Retrieve Envelope Information with ETTN Number for the Invoice](https://developer.nilvera.com/en/api/e-invoice-api/purchase-invoices/retrieve-envelope-information-with-ettn-number-for-the-invoice.md)
- [Save as Draft](https://developer.nilvera.com/en/api/e-invoice-api/purchase-invoices/save-as-draft.md)
- [Respond to the Invoice](https://developer.nilvera.com/en/api/e-invoice-api/purchase-invoices/respond-to-the-invoice.md)
- [Retrieve Rejection Response of the Invoice](https://developer.nilvera.com/en/api/e-invoice-api/purchase-invoices/retrieve-rejection-response-of-the-invoice.md)
- [Save the Purchase Invoice as a Return Invoice](https://developer.nilvera.com/en/api/e-invoice-api/purchase-invoices/save-the-purchase-invoice-as-a-return-invoice.md)
- [Retrieve Status Information of the Purchase Invoice](https://developer.nilvera.com/en/api/e-invoice-api/purchase-invoices/retrieve-status-information-of-the-purchase-invoice.md)
- [Assign Custom Code to Invoice](https://developer.nilvera.com/en/api/e-invoice-api/purchase-invoices/assign-custom-code-to-invoice.md)