SAP Message PV489 - Object &3 (&2) is already related (time constraint)

Diagnosis
You attempted to relate object &V1& &V3& (ID &V2&) to the object to beedited. It is possible that relationship &V4& is not allowed for thisobject because the object already has a relationship that has a timeconstraint which is not 3 ("as often as desired"). (See below)

Procedure
Choose an object that is as yet unrelated.
If this is not an error message but simply information, you can ignore
this message. You can relate object &V1& &V2& with the object to beedited by overwriting the existing relationship ("move").