Exactly one tax registration for the ship-from party

Error FX-SCH-A-000810 Factur-X

Element 'ram:ID' 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:ID does not occur exactly once in ram:SpecifiedTaxRegistration. The element is either missing or appears more than once.

What the rule means

The ship-from party’s tax registration must contain exactly one identifier so that the registration is stated unambiguously by this element.

Please provide exactly one identifier for the ship-from party’s tax registration

ram:ID is missing or appears more than once in the ship-from party’s ram:SpecifiedTaxRegistration. The number of elements can be adjusted to exactly one.

What to do
  1. Locate ram:SpecifiedTaxRegistration in ram:ShipFromTradeParty.
  2. Ensure that it contains exactly one ram:ID element.
  3. Regenerate the invoice and validate it again.
What it looks like
✗ Triggers the message 
<ram:SpecifiedTaxRegistration/>
✓ Correct 
<ram:SpecifiedTaxRegistration>
  <ram:ID>12345</ram:ID>
</ram:SpecifiedTaxRegistration>
Technical details

The rule checks that ram:SpecifiedTaxRegistration contains exactly one direct ram:ID child element.

Where the rule applies

This rule applies to ram:SpecifiedTaxRegistration for the ship-from party (ram:ShipFromTradeParty).

Context (rule/@context)
/rsm:CrossIndustryInvoice/rsm:SupplyChainTradeTransaction/ram:ApplicableHeaderTradeDelivery/ ram:ShipFromTradeParty/ram:SpecifiedTaxRegistration
Test expression (assert/@test)
count(ram:ID)=1