Incidents can be associated with NPIOs but there is no OBS field on it.
The Incident Categories object can be associated when associating to the OBS.
Only the Incident object is available from the Administration > Data Administration > Studio > Objects page
The incident categories can be tied to NPIOs, e.g. applications, ideas, other work, products
however the Resource OBS field is hidden on those NPIOs.
Incidents represent events that do not form part of the standard operation of a service.