No processing log exists

What causes this issue?

A processing log could not be found for the selected output.

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?

Possible reasons are as follows:
The selected output has not yet been processed
The processing program did not write a log
System logging has been de-activated for the selected output type (use
settings in Customizing for current application for the selected output
type)

Error message extract from SAP system. Copyright SAP SE.