Activity Chart Checks : (C4027) Compound flow-lines with identical targets

(C4027) Compound flow-lines with identical targets

Error In:
Completeness
Description:
There are compound flow-lines whose target set contains the same activity more than once, or an activity and one of its descendants.
Example:
Components of flow-line B in the following chart.
 
Erroneous Elements:
Components of compound flow-lines