Section: 13.2.4.3.1.2 metadata
Content: The JSON object containing information added by the sending SEPP. It shall contain: a) N32-f message ID: Unique identifier (64-bit integer) representing a HTTP Request/Response transaction between two SEPPs. The N32-f message ID is generated by the sending SEPP and included in the HTTP Request sent over the N32 interface. The receiving SEPP uses the same N32-f message ID when it responds back with a HTTP Response. The N32-f message ID is included in the metadata portion of the JSON structure. b) authorizedIPX ID: String identifying the first hop IPX (cIPX or pIPX) that is authorized to update the message. This field shall always be present. When there is no IPX that is authorized to update, the value of this field is set to null. The sending SEPP selects one of the IPX providers from the list exchanged with the other SEPP during parameter exchange over N32-c and includes its identifier value in this field. c) N32-f context ID: Unique identifier representing the N32-f context information used for protecting the message. This is exchanged during parameter exchange over N32-c (clause 13.2.2.4.1).