Select a bank function (by double-clicking)

What causes this issue?

To create new bank data, you first have to tell the system which
function this bank is to assume. The system has to display a bank
function in the "bank data" area before you can create new bank data.

System Response

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

How to fix this error?

Select a bank function on the tree and activate it by double-clicking.

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.