No layouts could be created for table GLT0

What causes this issue?

You are attempting to create a layout for summary table GLT0, but this
is not possible with this planning tool.

System Response

Planning is interrupted.

How to fix this error?

Use the standard layout maintenance.

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.