SAP Message WXP677 - &1 exists more than once in your selection

Diagnosis
You have tried to create an allocation table in manual planning. Indoing so, you have selected rows and columns in the planning table.More than one characteristic value has been selected for characteristicV1. only one characteristic value can be used to create theallocation table.

System Response
The allocation table cannot be created.

Procedure
Select the data so that only one characteristic value appears forcharacteristic &V1&.