Message

Attribute 'schemeAgencyID' MUST contain value 'OASIS-UBL-TC'

Context
/espd-req:ESPDRequest/cbc:UBLVersionID
Test
not(@schemeAgencyID) or @schemeAgencyID = 'OASIS-UBL-TC'
Usage
/ espd-req:ESPDRequest / cbc:UBLVersionID / @schemeAgencyID