MESSAGE and ERROR

Always end MESSAGE or ERROR with a period. Bad code

CustIsBlockedErr@1025 : TextConst 'ENU=You cannot %1 this type of document when Customer %2 is blocked with type %3';
...
ERROR(CustIsBlockedErr,...);

Good code

CustIsBlockedErr@1025 : TextConst 'ENU=You cannot %1 this type of document when Customer %2 is blocked with type %3.';
...
ERROR(CustIsBlockedErr,...);