SAP Message XC164 - &1: Sales scheduling agreement also defined for system &2

Diagnosis
For the combination (material/plant) &V1& you have already defined inanother model that the sales scheduling agreements are not to beplanned in system &V3& but in &V2&.
This is an inconsistency because the sales scheduling agreements mayonly ever be planned in one SAP APO system.
The model concerned is &V4&.

System Response
If you activate this model/these models, the behavior of salesscheduling agreement planning is undefined.

Procedure
Deactivate or delete models so that a maximum of one SAP APO system isactive for planning sales scheduling agreements for combination(material/plant) &V1&.