Message SAP WT813 - Recipient &1, material &2: fields to be converted already maintained

Diagnosis At least one of the fields Minimum target stock,Maximum target stock or Number offorecast periods has already been maintained forrecipient &v1& and material &v2&. The fields cannottherefore be converted automatically. System Response No changes are made to any of the three fields. Procedure Check if the data is up to date, and make any necessary changes inmaterial master maintenance.