---
title: "SEFAZ e-invoicing (NF-e, CT-e, MDF-e) Amazonas NFC-e accepts CFOP 5.949 for tips: 2026-10-05 | Harbyn"
description: "SEFAZ e-invoicing (NF-e, CT-e, MDF-e) Amazonas NFC-e accepts CFOP 5.949 for tips, effective Oct 5, 2026."
canonical: "https://harbyn.com/changes/sefaz/2026-09-25-validation-rule-changes"
last-updated: 2026-10-09
---

# SEFAZ e-invoicing (NF-e, CT-e, MDF-e) Amazonas NFC-e accepts CFOP 5.949 for tips

Markdown version of <https://harbyn.com/changes/sefaz/2026-09-25-validation-rule-changes>.

Behavior change - SEFAZ e-invoicing (NF-e, CT-e, MDF-e). info severity. In effect. History: recorded after the fact.

NT 2023.003 v1.40 changes NFC-e validation rules so issuers in Amazonas (AM) can use CFOP 5.949 with CST 40 or CSOSN 900 to record tips. Homologation from September 28 and production from October 5, 2026.

The deadline passed on Oct 5, 2026.

## Facts

| Fact | Value |
| --- | --- |
| Vendor | [SEFAZ e-invoicing (NF-e, CT-e, MDF-e)](https://harbyn.com/vendors/sefaz.md) |
| Kind | Behavior change |
| Severity | info |
| Status | In effect |
| Announced | Sep 25, 2026 |
| Effective | Oct 5, 2026 |
| Added to Harbyn | Oct 9, 2026 |
| Lead time | Recorded after the fact: added 4 days after the deadline |
| Review | Reviewed by a person, extracted by a model |

## Find it in your code

```sh
npx harbyn scan
```

This change names no identifier the scanner can match line by line, so the scan tells you whether your repository uses SEFAZ e-invoicing (NF-e, CT-e, MDF-e), from its packages and API hosts. Nothing leaves your machine.

## Sources

Where this event comes from: the page we read, when we read it, and the hash of that snapshot.

- <https://www.nfe.fazenda.gov.br/portal/listaConteudo.aspx?tipoConteudo=04BIflQt1aY=> (changelog, fetched 2026-10-09 06:16 UTC, sha256 `8db407db282789572cb15ff30c7f13cd1e5dd77b59e52a65cf15d15c7c960ec7`)

## Related changes

### More from SEFAZ e-invoicing (NF-e, CT-e, MDF-e)

- [GTIN registry check extended to construction materials from September 1, 2027](https://harbyn.com/changes/sefaz/2026-09-25-gtin-validation-rule-changes.md) (Behavior change, effective Sep 1, 2027)
- [BP-e net value field and total value rule change on November 16, 2026](https://harbyn.com/changes/sefaz/2026-10-01-bp-e-layout-and-validation-updates.md) (Behavior change, effective Nov 16, 2026)
- [CT-e drops EPEC and FSDA contingency on November 16, 2026](https://harbyn.com/changes/sefaz/2026-10-01-ct-e-ct-eos-and-gtv-e-layout-updates.md) (Breaking change, effective Nov 16, 2026)
- [NF-e referencing an NFC-e or CF-e rejected from December 14, 2026](https://harbyn.com/changes/sefaz/2026-10-01-danfe-simplificado-tipo-2-for-in-person-and-remote-sales.md) (Behavior change, effective Dec 14, 2026)

### Changes at other vendors

- [VTEX: Master Data public-field restrictions](https://harbyn.com/changes/vtex/2026-10-23-master-data-public-field-restrictions.md) (effective Oct 26, 2026)
- [NFS-e Nacional: vAjusteBC group added in restricted production](https://harbyn.com/changes/nfse-nacional/2026-10-20-criacao-do-grupo-vajustebc.md) (announced Oct 20, 2026)
- [Conta Azul: New client\_id format for new applications](https://harbyn.com/changes/contaazul/2026-10-01-novo-formato-de-client-id-para-novas-aplicacoes.md) (announced Oct 1, 2026)
- [Asaas: Alteração na estrutura de URLs públicas do Asaas](https://harbyn.com/changes/asaas/2026-09-25-alteracao-na-estrutura-de-urls-publicas-do-asaas.md) (effective Sep 28, 2026)

[All upcoming deadlines](https://harbyn.com/deadlines.md)