TS-0004 : Procedure for UPDATE of <subscription>.notificationURI not mentioned
In TS-0001, Table 10.2.10.4-1: <subscription> UPDATE, the first point of "Processing at Receiver" says:
If the notificationURI attribute contains Notification Target(s) that is/are not the Originator, see applicable processing in table 10.2.10.2-1 in clause 10.2.10.2
There, the procedure is specified as
If an entity listed in the notificationURI is not the Originator, the Hosting CSE may send a Notify request to that entity to verify this creation request. If the Hosting CSE initiates the verification, it shall check if the verification result in the Notify response is successful or not. If any of the entities listed in the notificationURI attribute fails verification then the create process fails.
This procedure is not mentioned in TS-0004, 7.4.8.2.3 Update (UPDATE procedure for <subscription>).
Proposal
This procedure should be defined in TS-0004, 7.4.8.2.3 Update. Perhaps similar to 7.4.8.2.1, Recv-6.4, point 5