Status of eDocument does not allow to execute process step/variant &1/&2

What causes this issue?

You are trying to execute the process step &V1& with the process step
variant &V2&.

System Response

The status of the eDocument does not allow the execution of this process
step with this variant.

How to fix this error?

If you are using the eDocument Cockpit, refer to the process
documentation (Help button) for more information on the allowed actions.
If you are using the Create and Submit eDocument report, refer to the
EDOPROCCHKFLAGV view for the allowed statuses for each process steps
including the process step variants.

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.