Exactly one URI for the buyer agent’s email contact

Error FX-SCH-A-000653 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:EmailURIUniversalCommunication does not contain exactly one ram:URIID: the element is missing or occurs more than once.

What the rule means

A single ram:URIID value is expected as the email URI in this contact context; a missing or repeated value does not meet the structural requirement.

Please provide exactly one URI for the buyer agent’s email contact

The buyer agent’s email contact is missing ram:URIID or contains it more than once. Having exactly one element resolves the structural issue.

What to do
  1. Check ram:EmailURIUniversalCommunication in the buyer agent’s contact.
  2. Make sure it contains exactly one ram:URIID element.
  3. Generate the invoice again and validate it once more.
What it looks like
✗ Triggers the message 
<ram:EmailURIUniversalCommunication/>
✓ Correct 
<ram:EmailURIUniversalCommunication>
  <ram:URIID/>
</ram:EmailURIUniversalCommunication>
Technical details

The XPath counts direct ram:URIID elements under ram:EmailURIUniversalCommunication and requires exactly one.

Where the rule applies

The rule applies to ram:URIID within the ram:EmailURIUniversalCommunication email communication of the buyer agent’s contact.

Context (rule/@context)
/rsm:CrossIndustryInvoice/rsm:SupplyChainTradeTransaction/ram:ApplicableHeaderTradeAgreement/ ram:BuyerAgentTradeParty/ram:DefinedTradeContact/ram:EmailURIUniversalCommunication
Test expression (assert/@test)
count(ram:URIID)=1