SAP Message RMSA_VRS044 - Replacement is not possible; & does not have a validity period

Diagnosis
You want to enter a replacement for an object of type &V1&. Thisis not possible, since no validity period has been specified for theobject.

System Response
The system switches to display mode.

Procedure
If the object is not a draft, assign it a validity period by entering avalid-from and valid-to date. Then create the replacement relationship.