Cyclic composition not allowed

What causes this issue?

A specification consists of itself (example: A consists of B and C, B
consists of A and D).
This is not permitted in the GetCompTree method, otherwise it could lead
to an endless cycle.

System Response

The system cancels processing.

How to fix this error?

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.