You can call Pac Data Elements or Meta Data Aggregates in a Meta Entity, a Meta Entity Type or in a Meta Data Aggregate. For each Pac Data Element inserted, you must indicate its cardinality and specify if a control must be performed on its allowed values.
These values indicate the minimum and maximum or equal number of occurrences allowed for this Pac Data Element in a User Entity. Take care that the value entered in the maximum cardinality field is higher than the one entered in the minimum cardinality field. Otherwise an error is displayed in your User Entity.
Checks are set on the values entered in these fields. For example, if you define by error a minimum cardinality which is in fact higher than the maximum cardinality, a message indicates in a tooltip that the maximum cardinality must be higher or equal to the minimum cardinality.