Planning area & falls within the SAP name range

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

What causes this issue?

You have tried to create a planning area with a name that is in the
name area reserved for SAP. SAP planning areas start with 9A.

System Response

The system cannot create this planning area

How to fix this error?

Choose another technical name for the planning area that does not start
with 9A.

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.