SAP Message WRMA_BCT_1203 - No mapping available for BW field &1 in transformation ID &2

Diagnosis
No value update was found in the transformation &V2& for the BW targetfield &V1&. For this reason, the BW field &V1& contains no informationand will be processed as empty by the system in the following RMA dataflow.

System Response
If the BW field &V1& is not supplied by a corresponding source field,system terminations and/or incorrect results may occur in the subsequentRMA process.

Procedure
Manually create a field mapping for the BW target field &V1& in thetransformation.
Perform the following steps:
Call up transaction RSTRANGUI.
Enter the ID for transformation &V2&.
Choose Execute.
To adjust the transformation, switch to the Change Mode (via Display<> Change).
Select the BW target field &V1& on the right-hand side of thetransformation.
In the context menu (right mouse button), choose Rule Details andassign the corresponding source field to the target field.
Choose &V3& as the source field and specify the rule type DirectAssignment.
Choose Transfer Values. The system copies the changes to thetransformation.
Save your entries.
Choose Transformation -> Activate.