SAP Message 29213 - Further allocations can only be made from same BOM (&)

Diagnosis You want to allocate the BOM for the selected material to an additionalplant. However, a multiple BOM (internal BOM number &V1&) exists forthe material in the plant to which you want to allocate the BOM. Procedure You can only link alternatives from the same BOM group, which are alsoidentified by internal BOM number &V1&, to this material.