Email communication contains exactly one URI identifier

Error FX-SCH-A-000760 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:URIID is missing from ram:EmailURIUniversalCommunication or occurs more than once.

What the rule means

ram:URIID contains the email address identifier in the email communication. Exactly one identifier is required for this communication.

Please provide exactly one URI identifier for the tax representative’s email communication

The URI identifier is missing from the tax representative contact’s email communication, or it appears more than once. The check is satisfied when there is exactly one ram:URIID.

What to do
  1. Locate ram:EmailURIUniversalCommunication for the tax representative’s contact person.
  2. Make sure it contains exactly one ram:URIID.
  3. Regenerate the invoice and validate it again.
What it looks like
✗ Triggers the message 
<ram:EmailURIUniversalCommunication/>
✓ Correct 
<ram:EmailURIUniversalCommunication>
  <ram:URIID>contact@example.com</ram:URIID>
</ram:EmailURIUniversalCommunication>
Technical details

The test counts the direct ram:URIID elements in ram:EmailURIUniversalCommunication and requires a count of 1.

Where the rule applies

The email communication of the seller tax representative’s contact person.

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