Message

Response MUST be provided for all requirements in this group.

Context
ccv:RequirementGroup[/espd:ESPDResponse][some $code in $special_rg satisfies normalize-space(cbc:ID) = $code]/ccv:Requirement
Test
ccv:Response or count(../ccv:Requirement/ccv:Response) = 0
Usage
/ espd:ESPDResponse / ccv:Criterion / ccv:RequirementGroup / ccv:Requirement