SAP Message UC902 - Sender structure &1 cannot be found DOCUMENTATION NOTES DiagnosisThe sender structure cannot be found.System ResponseThe conversion cannot be completed.ProcedureCheck the ABAP Dictionary to see whether the Dictionary structures forthe sender structure are saved and active. If not, save and activatethem and then execute program RKCXPR40 again. 128009Upgrade to 4.X: Error messages in CHK_POSTUP