Message

The action code for a catalogue line MUST be Add, Update or Delete if present

Context
cac:CatalogueLine/cbc:ActionCode
Test
( ( not(contains(normalize-space(.),' ')) and contains( ' Add Delete Update ',concat(' ',normalize-space(.),' ') ) ) )
Usage
/ ubl:Catalogue / cac:CatalogueLine / cbc:ActionCode