Exactly one ram:URIID in ram:URIUniversalCommunication

Error FX-SCH-A-000924 Factur-X

Element 'ram:URIID' must occur exactly 1 times.

Mandatory rule: As long as it is violated, the invoice is invalid and will be rejected by validators.
What is wrong

ram:URIUniversalCommunication is missing ram:URIID or contains it more than once. It must contain exactly one ram:URIID.

What the rule means

The ram:URIID contains the URI value conveyed by this communication structure.

Please provide exactly one `ram:URIID` for the payee's URI communication

The payee's URI communication does not contain exactly one ram:URIID. A single element meets this requirement.

What to do
  1. Locate the payee's ram:URIUniversalCommunication.
  2. Make sure it contains exactly one ram:URIID.
  3. Generate the invoice again and validate it again.
What it looks like
✗ Triggers the message 
<ram:URIUniversalCommunication/>
✓ Correct 
<ram:URIUniversalCommunication>
  <ram:URIID/>
</ram:URIUniversalCommunication>
Technical details

The check verifies that ram:URIUniversalCommunication contains exactly one direct ram:URIID element.

Where the rule applies

The payee's ram:URIUniversalCommunication.

Context (rule/@context)
/rsm:CrossIndustryInvoice/rsm:SupplyChainTradeTransaction/ram:ApplicableHeaderTradeSettlement/ ram:PayeeTradeParty/ram:URIUniversalCommunication
Test expression (assert/@test)
count(ram:URIID)=1