Message

Value MUST be part of code list 'UN/ECE Recommendation 20'.

Context
/ubl:CatalogueRequest/cac:CatalogueRequestLine/cac:RequiredItemLocationQuantity/cbc:MinimumQuantity
Test
not(@unitCode) or (some $code in $clUNECERec20 satisfies $code = @unitCode)
Code lists
UN/ECE Recommendation 20
Usage
/ ubl:CatalogueRequest / cac:CatalogueRequestLine / cac:RequiredItemLocationQuantity / cbc:MinimumQuantity / @unitCode