Message

[BR-101-GST-SG]- Total Amount excluding GST in SGD must be numeric and have maximum of 2 decimals

Context
cac:AdditionalDocumentReference[cbc:DocumentTypeCode]
Test
(cbc:DocumentTypeCode='sgdtotal-excl-gst' and cbc:DocumentDescription castable as xs:decimal and string-length(substring-after(cbc:DocumentDescription,'.'))<=2) or cbc:DocumentTypeCode != 'sgdtotal-excl-gst'
Usage
/ ubl:Invoice / cac:AdditionalDocumentReference / cbc:DocumentDescription