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Introduction

The Spanish Tax Agency (AEAT) is still finalizing VERI*FACTU’s technical and legal requirements. Invopop’s implementation may change accordingly.
VERI*FACTU is is a fiscal initiative by the Spanish Tax Agency (AEAT) that requires businesses to report invoices through certified software. The system generates unique identifiers for each invoice and creates digitally signed XML files that are submitted to the tax authorities.
VERI*FACTU will be mandatory for companies from January 1st, 2026. The rest of tax payers from 1 July 2026. Companies reporting with SII or TicketBAI are exempt from reporting with VERI*FACTU.

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Prerequisites

To issue your first VERI*FACTU invoice, you must have had registered at least one supplier. Make sure you read and implemented the VERI*FACTU supplier registration guide before continuing with this guide.

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Setup

Add a new workflow to your workspace for issuing invoices. You can start with the template below. Keep the Workflow ID at hand, you’ll use it later.
VERI*FACTU allows for document modifications after submission. If a document is rejected or contains errors, update the GOBL details and resubmit to the same workflow.

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Issue an Invoice

1

Upload an Invoice

Use the Create an entry endpoint to upload the invoice details. Include an invoice object in the data field with these required fields:
  • regime: ES
  • Add the es-verifactu-v1 addon
  • supplier: Use the details of the supplier you’ve registered before.
You can copy one of the example invoices below as a reference.
After uploading you’ll see the document in the Invoices section with status Empty.
Empty invoice

Empty invoice

2

Send the Invoice to the VERI*FACTU invoice workflow

Send the invoice to the VERI*FACTU workflow using the Create a job endpoint. Use:
  • workflow_id: use the Workflow ID of the _VERI*FACTU invoice: workflow we created during setup
  • silo_entry_id: use the Silo Entry ID of the invoice you’ve just uploaded.
The invoice’s status will change to Sent when the workflow completes successfully.
Sent invoice

Sent invoice

You can verify that the PDF was generated by clicking on the invoice and selecting the PDF from the “Files” tab.
Example VERI*FACTU invoice with QR

Example VERI*FACTU invoice with QR

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Issue a Credit Note (Rectificativa por Diferencias)

In Spain, one way to correct an invoice is by issuing a credit note, known as a Rectificativa por Diferencias. An alternative method is to issue a Rectificativa por Sustitución, which involves creating a new invoice with the type corrective. The difference between the two is subtle but important:
  • A credit note adjusts the value of the original invoice.
  • A corrective invoice replaces the original invoice entirely.
For example, if you issued an invoice for €100 but later realized it should have been €80, you can either:
  • Issue a credit note for €20, or
  • Issue a corrective invoice for €80.
Unless you have a specific requirement to use a corrective invoice we recommend only using credit notes. They’re more widely supported across countries, while corrective invoices are specific to a few jurisdictions like Spain.
1

Upload a Credit Note

A credit note in Invopop is an invoice of the type credit note. So the process is very similar to uploading an invoice. Use the Create an entry endpoint to upload a credit note. Include an invoice object in the data, with these required fields:
  • regime: ES
  • Add the es-verifactu-v1 addon
  • supplier: use the same supplier details as in the original invoice
  • type: credit-note
  • preceding: references the original invoice, within it, you must include:
    • uuid: the UUID of the original invoice (optional but recommended)
    • type: type of the original invoice
    • issue_date: the date of the original invoice
    • series: the series of the original invoice
    • code: the code of the original invoice
You can copy one of the example credit notes below as a reference.
After successful upload, you’ll see the credit note in the Invoices section with status Empty. If you’ve included the uuid of the invoice in preceding, you’ll see a link to the credit note we’ve just created in the Related tab of the invoice.
Invoice related to a credit note

Link to the credit note

2

Send the Credit Note to the VERI*FACTU invoice workflow

Send the credit note to the VERI*FACTU workflow using the Create a job endpoint. Use:
  • workflow_id: use the Workflow ID of the _VERI*FACTU invoice _workflow we created during setup
  • silo_entry_id: use the The Silo Entry ID of the credit note you’ve just uploaded.
The credit note’s status will change to Sent when the workflow completes successfully.

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Issue a Corrective Invoice (Rectificativa por Sustitución)

1

Upload a Corrective Invoice

A corrective invoice in Invopop is an invoice of the type corrective. So the process is very similar to uploading an invoice. Use the Create an entry endpoint to upload a corrective invoice. Include an invoice object in the data, with these required fields:
  • regime: ES
  • Add the es-verifactu-v1 addon
  • supplier_id: use the same supplier details as in the original invoice
  • type: corrective
  • preceding: references the original invoice, within it, you must include:
    • uuid: the UUID of the original invoice (optional but recommended)
    • type: type of the original invoice
    • issue_date: the date of the original invoice
    • series: the series of the original invoice
    • code: the code of the original invoice
    • tax: the tax section of the original invoice, you can copy it from the original invoice
You can copy one of the example corrective invoices below as a reference.
After successful upload, you’ll see the corrective invoice in the Invoices section with status Empty. If you’ve included the uuid of the invoice in preceding, you’ll see a link to the corrective invoice we’ve just created in the Related tab of the invoice.
Invoice related to a corrective invoice

Link to the corrective invoice

2

Send the Corrective Invoice to the VERI*FACTU invoice workflow

Send the corrective invoice to the VERI*FACTU workflow using the Create a job endpoint. Use:
  • workflow_id: use the Workflow ID of the VERI*FACTU invoice workflow we created during setup
  • silo_entry_id: use the The Silo Entry ID of the corrective invoice you’ve just uploaded.
The corrective invoice’s status will change to Sent when the workflow completes successfully.

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Cancel an Invoice

VERI*FACTU also allows you to cancel an invoice. In general, you should only cancel an invoice if it hasn’t been handed to the customer nor accepted by the tax authority. Different from a credit note or a corrective, canceling an invoice doesn’t produce a second document, which means you don’t have a paper to hand to your customer to show the cancellation. That’s why, if the invoice has been handed to the customer, we recommend issuing a credit note instead.
1

Add a cancel invoice workflow (only once)

To cancel an invoice, you need a workflow with the Cancel invoice step. You can start with the template below.
2

Send to cancellation workflow

To cancel an invoice, simply send it to the VERI*FACTU cancel invoice workflow created earlier using the Create a job endpoint.The invoice’s status will change to Void when the workflow completes successfully.

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FAQ