Hi Tamim:
Answering your questions:
1. At what time you get the error, once you enter transaction KP06 or when you enter your data and try to save ?
The error appears when I'm trying to save data.
2. do you have many controlling area in the same client ? if yes, are you getting the same error with a different controlling area as well ?
There's just one controlling area in this client.
Regards
Marco