Activity Chart Checks : (C4051) Instance off-page connectors without a matching definition off-page connector

(C4051) Instance off-page connectors without a matching definition off-page connector

Error In:
Completeness
Description:
There are instance off-page connectors that have no matching definition diagram connector.
This check is performed only when you specify with definition charts. Both instance and definition charts should be included in the Check Model profile. The error is reported in the instance chart.
Example:
Considering the decomposition of activity A2, the diagram connector shown on the instance chart is not shown on the definition chart.
Erroneous Elements:
Tested chart