Message

HashAlgorithmMethod MUST be 'http://www.w3.org/2001/04/xmlenc#sha256'

Context
ubl:Tender/cac:DocumentReference/cac:Attachment/cac:ExternalReference/cbc:HashAlgorithmMethod
Test
normalize-space(.)='http://www.w3.org/2001/04/xmlenc#sha256'
Usage
/ t005:Tender / cac:DocumentReference / cac:Attachment / cac:ExternalReference / cbc:HashAlgorithmMethod