Symptom:
The activation of a lineup configuration which contains a DCM output service with an active alternate source fails with a conflict error alike
 "Conflict detected on device <DCM device name>:  operation Pass service as alt source cannot be de-provisioned because it has dependent operation(s) in Lineup: <lineup name> Configuration <config name> (Activate source for output service)."

Conditions:
A lineup configuration was previously active in the same lineup, which contains the same DCM output service, but with a different active alternate source.