In SAP EWM, once a material document has undergone reversal, direct editing or text addition to it is not supported. Reversing a material document in the EWM system essentially generates a new document with reversed quantities and values.
However, should you need to include specific text related to the reversal, you have the option to create a fresh material document that contains the correct text. This newly generated document can serve as a point of reference to the original reversal. Moreover, you can take advantage of SAP EWM's document flow functionality to establish a connection between the reversed material document and the newly created one, thereby enhancing traceability.