UBL-SR-43-GST-SG

AdditionalDocumentReference/DocumentTypeCode shall only be used for invoiced object (code 130), project reference in CreditNote (code 50) or total amounts including or excluding GST in SGD (code sgdtotal-incl-gst or sgdtotal-excl-gst)

error: the document is invalid

What the rule checks

As the rule set's publisher wrote it. The rule runs on every element the context matches, and fails where the test is false; the validator reports the line of that element.

Context
cac:AdditionalDocumentReference[cbc:DocumentTypeCode]
Test
((cbc:DocumentTypeCode='130' or cbc:DocumentTypeCode='sgdtotal-incl-gst' or cbc:DocumentTypeCode='sgdtotal-excl-gst') or ((local-name(/*) = 'CreditNote') and (cbc:DocumentTypeCode='50')))

Checked with PINT SG Invoice, PINT SG Credit Note