Diagnosis
Process &V1&, variant &V2& must precede process &V3& &V4& in the chain.However, there is no connection between these two proceses.

System Response
The system is unable to activate the process chain.

Procedure
Change process &V3& &V4& so that it no longer references &V1& &V2&, orschedule process &V1& &V2& in the chain so that it precedes &V3& &V4&.