---
title: "Changes to Endpoint para emitir un documento soporte electrónico a la DIAN"
method: POST
path: "/support-documents"
---

# Changes to Endpoint para emitir un documento soporte electrónico a la DIAN

`POST /support-documents`

> Every recorded change to this operation, newest first.

## Timeline

Changed in 1 of 2 revisions.

- **2026-11-03** `2bc52ab55c2b`: 2 breaking, 4 info

## Changes

- **2026-11-03** `2bc52ab55c2b`: 2 breaking, 4 info
  - the response property `files/applicationResponse` became nullable for the status `200`
  - the response property `files/xml` became nullable for the status `200`
  - added the new optional `header` request parameter `Idempotency-Key`
  - added the new optional request property `withholdingTaxTotal`
  - added the non-success response with the status `409`
  - added the non-success response with the status `422`

---

[Operation](https://skmtc.dev/alegra/apis/api-alegra-proveedor-electr-nico-colombia/docs/support-documents/post.md) - [API](https://skmtc.dev/alegra/apis/api-alegra-proveedor-electr-nico-colombia.md) - [Page](https://skmtc.dev/alegra/apis/api-alegra-proveedor-electr-nico-colombia/changes/support-documents/post)