SAP Message X4501 - Relationships for order &1 cannot be redirected

Diagnosis
In process order &V1& phases are missing for the transfer to APO. Thesystem has attempted to divert the relationships of these phases totheir predecessors and successors. This lead to a situation that thesystem could not resolve.

System Response
It cannot be guaranteed that the order was correctly transferred to APOand that it can be successfully scheduled there.

Procedure
This error usually only occurs if there are cycles in the relationshipsof phases for a process order that are not transferred to APO. Youshould therefore remove the cycles in order &V1& .