SAP Message BJ018 - Another standard WBS is used for this material

Diagnosis The material for this sales order has been assigned to project &v1&with the standard WBS &v2&. You have now selected material that isassigned to another standard WBS. You can only use material in a sales order that has been assigned tothe same standard WBS. System Response INCLUDE 'NA_ALLG_NOFUNKTION' OBJECT DOKU ID TX Procedure Select another material.