Error: Service process cannot be confirmed due to its status

Hi Experts,

we want to create a Service Notification (BUS2000117) as a follow-up document of a service order (BUS2000116). The problem is that we receive the following error:

Service process cannot be confirmed due to its status

*Diagnosis*
You cannot enter a confirmation for the service process due to its status.

*System Response*
To enable you to enter a confirmation for a service process, it must be released and may not yet have the status Closed .

*Procedure*
Check the service process status and if necessary, change it.

How can i shut off the control of the status as we need to create service confirmation of service orders which are still in process. Is there any customizing?

Best Regards

Oliver