This is a submission error generated after submitting iXBRL accounts to HMRC, which is caused by having more than three banks assigned to a client in Sage APA. It can also be caused by tax and VAT offices.
In order to resolve this error message you will need to delete some of the banks for your client if you have selected more than three. Follow the steps below to resolve this submission error:
If the banks are not numbered 1:3 then you will need to delete the banks and enter them again. Follow the steps above to delete the banks so you can re-enter them.
You can check this in the Officials database:
Note: The tax offices and VAT offices can also cause this error message. Make sure any tax or VAT offices have all the correct information entered and that you have not selected more than 3 of each of them.