Activity Chart Checks : (C4132) Elements input to router that are not output

(C4132) Elements input to router that are not output

Error In:
Completeness
Description:
Textual elements (data-items, conditions, and events) that are shown flowing into a router on an activity chart are not shown flowing out.
Example:
In the figure, data-item D is shown as an input to ROUTER_1, but is not shown flowing out of ROUTER_1.
Erroneous Elements:
Textual elements