Module Chart Checks : (C6055) Elements that flow to/from generic instance but are not used as actual parameters

(C6055) Elements that flow to/from generic instance but are not used as actual parameters

Error In:
Completeness
Description:
There are elements flowing into or out of an instance box of a generic chart, but they are not declared as an actual input or output parameter.
Erroneous Elements:
Events, conditions, data-items, and fields