Shipping advice (SSA) in ST:0 with DocType: Production is generated when the ‘Forward to Stock’ button on a production work order ( PWO ) is repeatedly pressed several times on the same PWO. If ‘Forward to Stock’ is repeatedly pressed on the same PWO, a check is made. If the job is already ongoing, it will no longer continue with the next SSA that has been triggered. (This will then be in ST:0 without any items). SSA’s in ST:9 without any items can be discarded (ST:D). If user does not have the option to discard, it can be he has to transfer the document to yourself using the ‘Transfer document to Myself’ Icon.