I am doing some bussiness validations in ML81N and popping up error or warning messages on SAVE of SES. For this I am using the user exits EXIT_SAPLMLSP_031 and EXIT_SAPLMLSP_030. Suppose if there are any error messages and if the user selects the 'BACK' (and selects yes in the pop up that appears) the SES is getting automatically saved. When I debugged the standard program there is no user exit that is getting triggered after the user selects 'YES' in the pop up that comes on selection of the BACK button in ML81N.
Can anyone let me know how can I pop up the same error or warning messages when the user selects BACK button and then selects YES in the POP UP that appears. Is there any SAP note that is to be applied or do I have to use any user exit.