I have created a BPS application which will allow users to manually enter plan data. In my enhanced layout I want to add a user exit function which will check the value of one of the CKF and depending on its value will not allow the user to save. So basically, I want to add a user exit on 'SAVE'. If the CKF is not equal to 0, then they should not be able to save.
Can anyone tell me how I can go about this?