SAP Message V4056 - Release no. &2 has already been allowed for in scheduling agreement &1

Diagnosis The release number entered has already been allowed for, that is, itcorresponds to the release number for the preceding release number. System Response If the message is defined as an error in Customizing for variablemessages, the system does not allow any further processing. Procedure Choose another release number from the number for the preceding releasenumber.