# Get PDF Document

Get PDF attachment by documentId and return the PDF file.

Endpoint: POST /rest/v1/documents/getPdf
Version: v 2026.03.01
Security: PublicApiKey

## Header parameters:

  - `x-software-id` (string)
    External software identifier to track which ERP has fetched this document.

## Request fields (application/json):

  - `documentId` (string)
    The unique identifier of the invoice document.
    Example: "6787a98e15306d37eed688a8"

  - `companyVatNumber` (string, required)
    The VAT number of the company.
    Example: "HR12345678910"


## Response 400 fields

## Response 404 fields