Activity Chart Checks : (C3031) Loops in compound flow-lines

(C3031) Loops in compound flow-lines

Error In:
Correctness
Description:
A group of flow-line segments, linked through connectors, create a loop or cycle that does not contain an activity or data-store.
Example:
In the following figure, the data-flow with label Z is shown as having the same source and target (diagram connector AB), thus creating a loop.
Erroneous Elements:
Flow-line segments in loops.