Bank accounts maintained in xk01 are not able to maintain different bank a/c for different company code. For example supplier ABC is used by both company code 1000 and 2000. When I maintain the bank account for supplier ABC in company code 2000 it will also impact the company code 1000 because they are sharing the same supplier code. The company code don't seem to be able to able maintain different bank account. Please check this out as to how to share the same supplier but maintain different bank account.
Thanks and Regards