I have used user exit variable multiple times in planning function. But in one function, I am facing the issue. I have created the user exit variable for one characteristics and using it in the copy function.
Whenever I try to save the planning function, it gives me error "Variable value can not be found" / "Variable contains invalid value". I have not kept the variable to mandatory. The characteristics is not a master data and its supposed to hold some number.
I have one more function where it works well. In that function,, the characteristics is a master data. But that shouldnt matter.
Why is this? Request some inputs here.