Enhancement &1 can only be changed after the generation is finished

What causes this issue?

You have tried to edit an enhancement with status <ZK>Generation</>.
It is not possible to do this directly.

System Response

The action is not possible.

How to fix this error?

You need to click 'Save and Generate' before you can edit the
enhancement.

Procedure for System Administrators

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.