let's say my Bank GL balance is 12k and my cash GL balance is 10k. now I have to bills to pay 2 different vendors. I register one payment by cash and the amount is 2k it should be deducted from the cash balance. I also register another payment by bank account and the amount is 1k which should be deducted from GL Bank balance.

But it is not happening. why?

another question is after register payment, the payment status was 'In payment'. what does it mean? how to turn status into 'Paid'

thanks in advance.

There are changes to the Cash and bank account journals, they now have additional accounts linked. The below posts explains the changes and process.

https://www.odoo.com/forum/help-1/v14-change-in-payment-behavior-how-do-the-suspense-and-outstanding-payment-accounts-change-the-journal-entries-posted-177592

https://www.odoo.com/forum/help-1/v14-could-someone-explain-the-complete-cash-payment-receipt-process-from-invoice-178031

@Jaideep it is nice to know that odoo is getting smarter. but there should be a way to record bank transfers manually or odoo have the facility to turn "In payment" to Paid and adjust the account.