Validation Constraints

Validation constraints are implicitly specified in the definition of a structure. This includes things like the data type, number of occurrences, and element length. Validation constraints can also be specified either in the structure or map definition in terms of expressions in the Validate expression tab for each map element.

Validation constraints can be specified either in a structure or a map. When you specify constraints in a structure, they are copied into the map at the time the structure is mapped. If the validation constraint is updated in the structure subsequently, it has no effect on the map.