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Should we allow for Require Header usage with “norefersub”?
REFER-
Issuer
REFER-
Recipient
REFER (Required)
REFER
420 Bad Extension
200 OK
REFER-
Issuer
REFER-
Recipient
REFER (Supported)
NOTIFY
2xx
481 (Call/Transaction Does Not Exist
Current Draft
Cullen
PPT Version