I need to pass a user input value to a planning function and I thought that I could do it by creating a variable of characteristic of length 60 with no master data.
I have created a variable for this characteristic and the variable pops up when I call the planning function. My problem is that when I insert a text in the variable field, the system returns an error saying that it has no master data for the text I have introduced and the selection is invalid.
How can I pass a text to my planning function if not through a variable? Any idea or advice is welcome.
thanks in advance for your help!!