`BR-TMP-7`

EN 16931 · validation rule

EN 16931Warning

A date in the CII document is not written as udt:DateTimeString with format="102" and value YYYYMMDD (e.g. 20260907). The sender must fix ram:IssueDateTime, ram:DueDateDateTime, ram:OccurrenceDateTime etc.

Field: document.issue_date (BT-2) and other dates
Rule set: EN 16931
Rule-set version: EN 16931 validation artefacts 1.3.17 · in force since 2026-10-13 · Rule-set changelog
Who has to fix it: The sender

This is a property of the file you received, so it cannot be corrected on your side without changing the document — ask the supplier to reissue it.

Check your own invoice

Drop the file that failed. We parse it, run the official rule sets against it and list every finding with a fix — 20 invoices per day, no key, nothing stored.

Open the live demo

Same explanation over the API: GET /v1/rules/BR-TMP-7?lang=en