Interest account &1 is same as account for investments

What causes this issue?

You have selected an account for posting interest that is identical to
the account for investments.

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 different G/L account for the interest.

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.