Budgeting on total account

Hi guys, 

Im trying to budget on total accounts by recording budget amounts on total ledger accounts. I have created a total account that comprises all personnel expenses. Thereafter, when I try to add the total account no 7699TOT for the year 2018 i get an error message telling me that "The account type for main account 7699TOT is not valid. The main account type must be Financial." For details, please see the following screen-print. I can´f figure out whats wrong. I have followed the steps explained in the link below. 

https://community.dynamics.com/ax/b/dynamicsaxfinanceandcontrolling/archive/2016/04/08/a-note-on-budgeting-on-total-accounts

Please help.

Best regards

Tony