What it means
Each ram:DespatchAdviceReferencedDocument inside ram:ApplicableHeaderTradeDelivery must contain one ram:IssuerAssignedID. This rule counts those elements within each block; it does not check their contents. It applies to the Basic WL, Basic, EN 16931 and Extended profiles of Factur-X and ZUGFeRD.
Why it matters
Each reference block has one defined element for the despatch advice number. Missing or repeated number elements do not match that structure.
How to fix it
Check your despatch advice reference (BT-16). Ensure its ram:DespatchAdviceReferencedDocument contains one ram:IssuerAssignedID with the correct number. Remove the block if you did not intend to reference a despatch advice. Export your corrected file and recheck it.
Once the file is corrected, check it again for free: Validate a ZUGFeRD invoice
Or fix the invoice in a form and download the corrected file, for 1 credit: Fix a rejected e-invoice Beta
The rule as published
Element 'ram:IssuerAssignedID' must occur exactly 1 times. Where this rule applies
| Rule set | Version |
|---|---|
| Factur-X 1.09 BASIC WL | 1.0.9-2 |
| Factur-X 1.09 BASIC | 1.0.9-2 |
| Factur-X 1.09 EN 16931 | 1.0.9-2 |
| Factur-X 1.09 EXTENDED | 1.0.9-2 |
| ZUGFeRD 2.5 BASIC WL | 2.5.2 |
| ZUGFeRD 2.5 BASIC | 2.5.2 |
| ZUGFeRD 2.5 EN 16931 | 2.5.2 |
| ZUGFeRD 2.5 EXTENDED | 2.5.2 |
Check your file
Drop your e-invoice to see whether FX-SCH-A-000450 still fails, and which other rules do.
Related rules
- FX-SCH-A-000451 Do not repeat the delivery location ID
- FX-SCH-A-000452 Do not repeat the delivery location's global identifier
- FX-SCH-A-000453 Add the delivery location identifier's scheme
- FX-SCH-A-000454 The delivery location identifier must use an allowed scheme
- FX-SCH-A-000455 A delivery address must contain exactly one country
- FX-SCH-A-000456 A delivery address may contain only one region