Generation in batch released immediately

What causes this issue?

Since you released the generation immediately, you only need to check
whether the generation ran properly.

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?

You can find details on the generation in batch using transaction
<DS:TRAN.SM37>Batch Processing</>. This transaction displays the status
of the job and the log following generation.

Error message extract from SAP system. Copyright SAP SE.