Message

Value MUST be part of code list 'Boolean indicator (openPEPPOL)'.

Context
/ubl:Order/cac:AllowanceCharge/cbc:ChargeIndicator
Test
(some $code in $clTrueFalse satisfies $code = normalize-space(text()))
Code lists
Boolean indicator (openPEPPOL)
Usage
/ ubl:Order / cac:AllowanceCharge / cbc:ChargeIndicator