Peppol BIS Billing 3.0 · rule
UBL-DT-21
What does UBL-DT-21 mean? List scheme uri attribute should not be present
Why did my invoice fail UBL-DT-21?
The listSchemeURI attribute should not be present on code elements in an EN 16931 UBL invoice. It is part of the full UBL code metadata set that the core model excludes, so its presence triggers a warning. Remove it.
Official rule text
List scheme uri attribute should not be present
Common causes
- UBL library fills all optional code attributes
- Hand-copied generic UBL samples
Related rules
UBL-DT-01 · UBL-DT-06 · UBL-DT-07 · UBL-DT-08 · UBL-DT-09 · UBL-DT-10 · UBL-DT-11 · UBL-DT-12
Check your invoice against this rule
Paste it into the live demo, or call POST /v1/validate. See the quickstart.