I am getting an error when creating a budgetary position and setting up account for it, I am getting an error that says:

"Validation Error

The budget must have at least one account."

But I have selected the correct account and I have verified and checked that the accounts is available under chart of accounts. yet it keep on showing the same error message. Can someone please help me to fix this issue.

Note: I am using Odoo Community Version 16