No execute permission on 'Single Instance CU' CodeUnit with ID 50004

We’re getting the following message when posting our beginning balances using Sales Journal and Purchase Journal module:

No execute permission on ‘Single Instance CU’ CodeUnit with ID 50004.

Can anybody please assist me on this.

Thank you very much!

Welcome to DUG

Are you a Customer or Partner?

I think you are posting with Customer License and you do not have permission to use CU50004.

Check your roles & permission

Check whether user id have sufficient permission

Thank you very much for the assistance.