Enter either a rounding value or rounding profile

What causes this issue?

You have entered both a rounding value and a rounding profile.

System Response

This input combination is not allowed since it does not make sense to
enter a value in both fields.

How to fix this error?

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

Error message extract from SAP system. Copyright SAP SE.