This post is quite old, is it still open?
If yes,
- which release are you on?
- are you talking about user-specific scenarios or configured versions?
- did you copy standard planning area (which?) and work with the copied versions?
- CAPASUPPLY is input for Supply. Do you just try to change the figure itself, or did you run heuristic and the result does not consider your changed input?
- did you try to save the changed values in the version before executing heuristic? If not, and if you now try and get error message, you may have forgotten to initialize the version by copying the value from base version to the simulation version
Irmi