Error with Business area and profit center

Hello Guru's,

I have an issue when posting the stock through t-code MB1C and 521 movement type. We have assigned business area and profit centers for plants as below:

For Plant 1000,

Business Area: 1100

Profit center: 1100

And For Plant 2000,

Business Area: 1200

Profit center: 1200

But when I am assigning plant 2000, and assigning business area and profit center as 1200 respectively. System by default is picking as 1100 with a warning message.

Please help this resolving this issue, I want the system to take the correct assigned BA and Profit center.

Regards,

Varun Siddharth