Activity Chart Checks : (C4023) Flow-lines with incomplete target definition

(C4023) Flow-lines with incomplete target definition

Error In:
Completeness
Description:
There are flow-lines whose target is not connected to an activity, data-store, or connector. The target of such flow-lines appears in the activity chart as a small line perpendicular to the flow-line.
Example:
See the following figure.
Erroneous Elements:
Flow-lines