Open APIs

Can TMF641 patch be used to modify service operational state?

Patch in 641 is to modify the existing Service Order content. You can use new Service Order to modify a Service, if this modification requires some orchestration.
For simple service modifications, you should consider using TMF640
PATCH /service/123
Content-Type: application/json
{
 "operatingStatus": "degraded",
 "@type": "Service"
}

Plamen Stanoev is correct. The key to remember that TMF641 is about orders, and only relates to services in that context. So a PATCH on TMF641 will patch an existing order. In order to patch a service - use either TMF640 (if it is a material change to the service all the way into the network/infrastructure), or it may be possible to use TMF638 for non-material changes (eg. descriptions etc.).