Charts and GDS Relation Checks : (C7607) Inconsistent usage of chart

(C7607) Inconsistent usage of chart

Charts that are not defined in the model are used inconsistently, both as off-page and generic, or in one place as a statechart and in another as an activity-chart.
Error In:
Correctness
Example:
SSS does not exist in the model. There are two states in the model: S1@SSS and S2<SSS.
AAA does not exist in the model. There is a control activity CTRL@AAA (AAA is used as a statechart) and a regular activity A1@AAA (AAA is used as an activity-chart).
Erroneous Elements:
Charts