Charts and GDS Relation Checks : (C7603) Illegal usage type of charts

(C7603) Illegal usage type of charts

Charts that exist in the model are used as charts of another type.
Error In:
Correctness
Example:
Activity-chart AAA is used as an off-page chart of a state S@AAA. Generic chart GGG is used as an off-page chart S@GGG.
Erroneous Elements:
Charts