When Frequency of billing value is 'Others', then value should be provided in Invoice note

When Frequency of billing (BTAE-06) value is 'Others', then value should be provided in Invoice note (IBT-022).

Fails when this is false

not(cac:InvoicePeriod/cbc:DescriptionCode = "OTH" and not(exists(cbc:Note)))

The schematron test, verbatim. Context: /ubl:Invoice | /cn:CreditNote

Change the data so the statement above is true. Paste the invoice into the validator to see the exact element that fails.

Official · PINT AE (UAE) rules. Severity: error. Runs on UBL XML.