Pfd Management API. An OpenAPI 3.0.0 document with 3 path(s), API version 1.4.0, published verbatim by 3GPP in 3GPP TS 29.122 as part of the T8 Northbound (SCEF/NEF Exposure) suite and mirrored in the public 3GPP Forge GitLab repository.
openapi: 3.0.0
info:
title: 3gpp-pfd-management
version: 1.4.0
description: |
API for PFD management.
© 2025, 3GPP Organizational Partners (ARIB, ATIS, CCSA, ETSI, TSDSI, TTA, TTC).
All rights reserved.
externalDocs:
description: 3GPP TS 29.122 V19.5.0 T8 reference point for Northbound APIs
url: 'https://www.3gpp.org/ftp/Specs/archive/29_series/29.122/'
security:
- {}
- oAuth2ClientCredentials: []
servers:
- url: '{apiRoot}/3gpp-pfd-management/v1'
variables:
apiRoot:
default: https://example.com
description: apiRoot as defined in clause 5.2.4 of 3GPP TS 29.122.
paths:
/{scsAsId}/transactions:
parameters:
- name: scsAsId
in: path
description: Identifier of the SCS/AS as defined in clause 5.2.4 of 3GPP TS 29.122.
required: true
schema:
type: string
get:
summary: Read all or queried PFDs for a given SCS/AS.
operationId: FetchAllPFDManagementTransactions
tags:
- PFD Management Transactions
parameters:
- name: external-app-ids
in: query
description: The external application identifier(s) of the requested PFD data.
required: false
schema:
type: array
items:
type: string
minItems: 1
- name: supp-feat
in: query
description: Contains the list of supported features.
required: false
schema:
$ref: 'TS29571_CommonData.yaml#/components/schemas/SupportedFeatures'
responses:
'200':
description: OK. All or queried transactions related to the request URI are returned.
content:
application/json:
schema:
type: array
items:
$ref: '#/components/schemas/PfdManagement'
'307':
$ref: 'TS29122_CommonData.yaml#/components/responses/307'
'308':
$ref: 'TS29122_CommonData.yaml#/components/responses/308'
'400':
$ref: 'TS29122_CommonData.yaml#/components/responses/400'
'401':
$ref: 'TS29122_CommonData.yaml#/components/responses/401'
'403':
$ref: 'TS29122_CommonData.yaml#/components/responses/403'
'404':
$ref: 'TS29122_CommonData.yaml#/components/responses/404'
'406':
$ref: 'TS29122_CommonData.yaml#/components/responses/406'
'429':
$ref: 'TS29122_CommonData.yaml#/components/responses/429'
'500':
$ref: 'TS29122_CommonData.yaml#/components/responses/500'
'503':
$ref: 'TS29122_CommonData.yaml#/components/responses/503'
default:
$ref: 'TS29122_CommonData.yaml#/components/responses/default'
post:
summary: Create PFDs for a given SCS/AS and one or more external Application Identifier(s).
operationId: CreatePFDManagementTransaction
tags:
- PFD Management Transactions
requestBody:
required: true
content:
application/json:
schema:
$ref: '#/components/schemas/PfdManagement'
description: Create a new transaction for PFD management.
responses:
'201':
description: >
Created. The transaction was created successfully. The SCEF shall return the created
transaction in the response content. PfdReport may be included to provide detailed
failure information for some applications.
content:
application/json:
schema:
$ref: '#/components/schemas/PfdManagement'
headers:
Location:
description: 'Contains the URI of the newly created resource'
required: true
schema:
type: string
'400':
$ref: 'TS29122_CommonData.yaml#/components/responses/400'
'401':
$ref: 'TS29122_CommonData.yaml#/components/responses/401'
'403':
$ref: 'TS29122_CommonData.yaml#/components/responses/403'
'404':
$ref: 'TS29122_CommonData.yaml#/components/responses/404'
'411':
$ref: 'TS29122_CommonData.yaml#/components/responses/411'
'413':
$ref: 'TS29122_CommonData.yaml#/components/responses/413'
'415':
$ref: 'TS29122_CommonData.yaml#/components/responses/415'
'429':
$ref: 'TS29122_CommonData.yaml#/components/responses/429'
'500':
description: >
The PFDs for all applications were not created successfully. PfdReport is included with
detailed information.
content:
application/json:
schema:
type: array
items:
$ref: '#/components/schemas/PfdReport'
minItems: 1
application/problem+json:
schema:
$ref: 'TS29122_CommonData.yaml#/components/schemas/ProblemDetails'
'503':
$ref: 'TS29122_CommonData.yaml#/components/responses/503'
default:
$ref: 'TS29122_CommonData.yaml#/components/responses/default'
callbacks:
notificationDestination:
'{$request.body#/notificationDestination}':
post:
requestBody: # contents of the callback message
required: true
content:
application/json:
schema:
type: array
items:
$ref: '#/components/schemas/PfdReport'
minItems: 1
responses:
'204':
description: No Content (successful notification)
'307':
$ref: 'TS29122_CommonData.yaml#/components/responses/307'
'308':
$ref: 'TS29122_CommonData.yaml#/components/responses/308'
'400':
$ref: 'TS29122_CommonData.yaml#/components/responses/400'
'401':
$ref: 'TS29122_CommonData.yaml#/components/responses/401'
'403':
$ref: 'TS29122_CommonData.yaml#/components/responses/403'
'404':
$ref: 'TS29122_CommonData.yaml#/components/responses/404'
'411':
$ref: 'TS29122_CommonData.yaml#/components/responses/411'
'413':
$ref: 'TS29122_CommonData.yaml#/components/responses/413'
'415':
$ref: 'TS29122_CommonData.yaml#/components/responses/415'
'429':
$ref: 'TS29122_CommonData.yaml#/components/responses/429'
'500':
$ref: 'TS29122_CommonData.yaml#/components/responses/500'
'503':
$ref: 'TS29122_CommonData.yaml#/components/responses/503'
default:
$ref: 'TS29122_CommonData.yaml#/components/responses/default'
/{scsAsId}/transactions/{transactionId}:
parameters:
- name: scsAsId
in: path
description: Identifier of the SCS/AS as defined in clause 5.2.4 of 3GPP TS 29.122.
required: true
schema:
type: string
- name: transactionId
in: path
description: Transaction ID
required: true
schema:
type: string
get:
summary: Read all PFDs for a given SCS/AS and a transaction for one or more external Application Identifier(s).
operationId: FetchIndPFDManagementTransaction
tags:
- Individual PFD Management Transaction
responses:
'200':
description: OK. The transaction information related to the request URI is returned.
content:
application/json:
schema:
$ref: '#/components/schemas/PfdManagement'
'307':
$ref: 'TS29122_CommonData.yaml#/components/responses/307'
'308':
$ref: 'TS29122_CommonData.yaml#/components/responses/308'
'400':
$ref: 'TS29122_CommonData.yaml#/components/responses/400'
'401':
$ref: 'TS29122_CommonData.yaml#/components/responses/401'
'403':
$ref: 'TS29122_CommonData.yaml#/components/responses/403'
'404':
$ref: 'TS29122_CommonData.yaml#/components/responses/404'
'406':
$ref: 'TS29122_CommonData.yaml#/components/responses/406'
'429':
$ref: 'TS29122_CommonData.yaml#/components/responses/429'
'500':
$ref: 'TS29122_CommonData.yaml#/components/responses/500'
'503':
$ref: 'TS29122_CommonData.yaml#/components/responses/503'
default:
$ref: 'TS29122_CommonData.yaml#/components/responses/default'
put:
summary: Update PFDs for a given SCS/AS and a transaction for one or more external Application Identifier(s).
operationId: UpdateIndPFDManagementTransaction
tags:
- Individual PFD Management Transaction
requestBody:
required: true
content:
application/json:
schema:
$ref: '#/components/schemas/PfdManagement'
description: Change information in PFD management transaction.
responses:
'200':
description: >
OK. The transaction was modified successfully. The SCEF shall return an updated
transaction in the response content.
content:
application/json:
schema:
$ref: '#/components/schemas/PfdManagement'
'204':
description: No Content.
'307':
$ref: 'TS29122_CommonData.yaml#/components/responses/307'
'308':
$ref: 'TS29122_CommonData.yaml#/components/responses/308'
'400':
$ref: 'TS29122_CommonData.yaml#/components/responses/400'
'401':
$ref: 'TS29122_CommonData.yaml#/components/responses/401'
'403':
$ref: 'TS29122_CommonData.yaml#/components/responses/403'
'404':
$ref: 'TS29122_CommonData.yaml#/components/responses/404'
'411':
$ref: 'TS29122_CommonData.yaml#/components/responses/411'
'413':
$ref: 'TS29122_CommonData.yaml#/components/responses/413'
'415':
$ref: 'TS29122_CommonData.yaml#/components/responses/415'
'429':
$ref: 'TS29122_CommonData.yaml#/components/responses/429'
'500':
description: >
The PFDs for all applications were not updated successfully. PfdReport is included with
detailed information.
content:
application/json:
schema:
type: array
items:
$ref: '#/components/schemas/PfdReport'
minItems: 1
application/problem+json:
schema:
$ref: 'TS29122_CommonData.yaml#/components/schemas/ProblemDetails'
'503':
$ref: 'TS29122_CommonData.yaml#/components/responses/503'
default:
$ref: 'TS29122_CommonData.yaml#/components/responses/default'
patch:
summary: Modify an existing PFD Management Transaction resource.
operationId: ModifyIndPFDManagementTransaction
tags:
- Individual PFD Management Transaction
requestBody:
required: true
content:
application/merge-patch+json:
schema:
$ref: '#/components/schemas/PfdManagementPatch'
responses:
'200':
description: >
OK. The PFD Management Transaction was modified successfully. The SCEF shall return an
updated representation of the resource in the response body.
content:
application/json:
schema:
$ref: '#/components/schemas/PfdManagement'
'204':
description: No Content.
'307':
$ref: 'TS29122_CommonData.yaml#/components/responses/307'
'308':
$ref: 'TS29122_CommonData.yaml#/components/responses/308'
'400':
$ref: 'TS29122_CommonData.yaml#/components/responses/400'
'401':
$ref: 'TS29122_CommonData.yaml#/components/responses/401'
'403':
$ref: 'TS29122_CommonData.yaml#/components/responses/403'
'404':
$ref: 'TS29122_CommonData.yaml#/components/responses/404'
'411':
$ref: 'TS29122_CommonData.yaml#/components/responses/411'
'413':
$ref: 'TS29122_CommonData.yaml#/components/responses/413'
'415':
$ref: 'TS29122_CommonData.yaml#/components/responses/415'
'429':
$ref: 'TS29122_CommonData.yaml#/components/responses/429'
'500':
description: >
The PFDs for all applications were not modified successfully. A set of PFD Report(s) is
included with detailed information.
content:
application/json:
schema:
type: array
items:
$ref: '#/components/schemas/PfdReport'
minItems: 1
application/problem+json:
schema:
$ref: 'TS29122_CommonData.yaml#/components/schemas/ProblemDetails'
'503':
$ref: 'TS29122_CommonData.yaml#/components/responses/503'
default:
$ref: 'TS29122_CommonData.yaml#/components/responses/default'
delete:
summary: Delete PFDs for a given SCS/AS and a transaction for one or more external Application Identifier(s).
operationId: DeleteIndPFDManagementTransaction
tags:
- Individual PFD Management Transaction
responses:
'204':
description: >
No Content. The transaction was deleted successfully. The content shall be empty.
'307':
$ref: 'TS29122_CommonData.yaml#/components/responses/307'
'308':
$ref: 'TS29122_CommonData.yaml#/components/responses/308'
'400':
$ref: 'TS29122_CommonData.yaml#/components/responses/400'
'401':
$ref: 'TS29122_CommonData.yaml#/components/responses/401'
'403':
$ref: 'TS29122_CommonData.yaml#/components/responses/403'
'404':
$ref: 'TS29122_CommonData.yaml#/components/responses/404'
'429':
$ref: 'TS29122_CommonData.yaml#/components/responses/429'
'500':
$ref: 'TS29122_CommonData.yaml#/components/responses/500'
'503':
$ref: 'TS29122_CommonData.yaml#/components/responses/503'
default:
$ref: 'TS29122_CommonData.yaml#/components/responses/default'
/{scsAsId}/transactions/{transactionId}/applications/{appId}:
parameters:
- name: scsAsId
in: path
description: Identifier of the SCS/AS as defined in clause 5.2.4 of 3GPP TS 29.122.
required: true
schema:
type: string
- name: transactionId
in: path
description: Transaction ID
required: true
schema:
type: string
- name: appId
in: path
description: Identifier of the application
required: true
schema:
type: string
get:
summary: Read PFDs at individual application level.
operationId: FetchIndApplicationPFDManagement
tags:
- Individual Application PFD Management
responses:
'200':
description: OK. The application information related to the request URI is returned.
content:
application/json:
schema:
$ref: '#/components/schemas/PfdData'
'307':
$ref: 'TS29122_CommonData.yaml#/components/responses/307'
'308':
$ref: 'TS29122_CommonData.yaml#/components/responses/308'
'400':
$ref: 'TS29122_CommonData.yaml#/components/responses/400'
'401':
$ref: 'TS29122_CommonData.yaml#/components/responses/401'
'403':
$ref: 'TS29122_CommonData.yaml#/components/responses/403'
'404':
$ref: 'TS29122_CommonData.yaml#/components/responses/404'
'406':
$ref: 'TS29122_CommonData.yaml#/components/responses/406'
'429':
$ref: 'TS29122_CommonData.yaml#/components/responses/429'
'500':
$ref: 'TS29122_CommonData.yaml#/components/responses/500'
'503':
$ref: 'TS29122_CommonData.yaml#/components/responses/503'
default:
$ref: 'TS29122_CommonData.yaml#/components/responses/default'
put:
summary: Update PFDs at individual application level.
operationId: UpdateIndApplicationPFDManagement
tags:
- Individual Application PFD Management
requestBody:
required: true
content:
application/json:
schema:
$ref: '#/components/schemas/PfdData'
description: Change information in application.
responses:
'200':
description: >
OK. The application resource was modified successfully. The SCEF shall return an updated
application resource in the response content.
content:
application/json:
schema:
$ref: '#/components/schemas/PfdData'
'204':
description: No Content.
'307':
$ref: 'TS29122_CommonData.yaml#/components/responses/307'
'308':
$ref: 'TS29122_CommonData.yaml#/components/responses/308'
'400':
$ref: 'TS29122_CommonData.yaml#/components/responses/400'
'401':
$ref: 'TS29122_CommonData.yaml#/components/responses/401'
'403':
description: The PFDs for the application were not updated successfully.
content:
application/json:
schema:
$ref: '#/components/schemas/PfdReport'
application/problem+json:
schema:
$ref: 'TS29122_CommonData.yaml#/components/schemas/ProblemDetails'
'404':
$ref: 'TS29122_CommonData.yaml#/components/responses/404'
'409':
description: The PFDs for the application were not updated successfully.
content:
application/json:
schema:
$ref: '#/components/schemas/PfdReport'
application/problem+json:
schema:
$ref: 'TS29122_CommonData.yaml#/components/schemas/ProblemDetails'
'411':
$ref: 'TS29122_CommonData.yaml#/components/responses/411'
'413':
$ref: 'TS29122_CommonData.yaml#/components/responses/413'
'415':
$ref: 'TS29122_CommonData.yaml#/components/responses/415'
'429':
$ref: 'TS29122_CommonData.yaml#/components/responses/429'
'500':
description: The PFDs for the application were not updated successfully.
content:
application/json:
schema:
$ref: '#/components/schemas/PfdReport'
application/problem+json:
schema:
$ref: 'TS29122_CommonData.yaml#/components/schemas/ProblemDetails'
'503':
$ref: 'TS29122_CommonData.yaml#/components/responses/503'
default:
$ref: 'TS29122_CommonData.yaml#/components/responses/default'
patch:
summary: Update PFDs at individual application level.
operationId: ModifyIndApplicationPFDManagement
tags:
- Individual Application PFD Management
requestBody:
required: true
content:
application/merge-patch+json:
schema:
$ref: '#/components/schemas/PfdData'
description: Change information in PFD management transaction.
responses:
'200':
description: >
OK. The transaction was modified successfully. The SCEF shall return an updated
transaction in the response content.
content:
application/json:
schema:
$ref: '#/components/schemas/PfdData'
'204':
description: No Content
'307':
$ref: 'TS29122_CommonData.yaml#/components/responses/307'
'308':
$ref: 'TS29122_CommonData.yaml#/components/responses/308'
'400':
$ref: 'TS29122_CommonData.yaml#/components/responses/400'
'401':
$ref: 'TS29122_CommonData.yaml#/components/responses/401'
'403':
description: The PFDs for the application were not updated successfully.
content:
application/json:
schema:
$ref: '#/components/schemas/PfdReport'
application/problem+json:
schema:
$ref: 'TS29122_CommonData.yaml#/components/schemas/ProblemDetails'
'404':
$ref: 'TS29122_CommonData.yaml#/components/responses/404'
'409':
description: The PFDs for the application were not updated successfully.
content:
application/json:
schema:
$ref: '#/components/schemas/PfdReport'
application/problem+json:
schema:
$ref: 'TS29122_CommonData.yaml#/components/schemas/ProblemDetails'
'411':
$ref: 'TS29122_CommonData.yaml#/components/responses/411'
'413':
$ref: 'TS29122_CommonData.yaml#/components/responses/413'
'415':
$ref: 'TS29122_CommonData.yaml#/components/responses/415'
'429':
$ref: 'TS29122_CommonData.yaml#/components/responses/429'
'500':
description: The PFDs for the application were not updated successfully.
content:
application/json:
schema:
$ref: '#/components/schemas/PfdReport'
application/problem+json:
schema:
$ref: 'TS29122_CommonData.yaml#/components/schemas/ProblemDetails'
'503':
$ref: 'TS29122_CommonData.yaml#/components/responses/503'
default:
$ref: 'TS29122_CommonData.yaml#/components/responses/default'
delete:
summary: Delete PFDs at individual application level.
operationId: DeleteIndApplicationPFDManagement
tags:
- Individual Application PFD Management
responses:
'204':
description: >
No Content. The application was deleted successfully. The content shall be empty.
'307':
$ref: 'TS29122_CommonData.yaml#/components/responses/307'
'308':
$ref: 'TS29122_CommonData.yaml#/components/responses/308'
'400':
$ref: 'TS29122_CommonData.yaml#/components/responses/400'
'401':
$ref: 'TS29122_CommonData.yaml#/components/responses/401'
'403':
$ref: 'TS29122_CommonData.yaml#/components/responses/403'
'404':
$ref: 'TS29122_CommonData.yaml#/components/responses/404'
'429':
$ref: 'TS29122_CommonData.yaml#/components/responses/429'
'500':
$ref: 'TS29122_CommonData.yaml#/components/responses/500'
'503':
$ref: 'TS29122_CommonData.yaml#/components/responses/503'
default:
$ref: 'TS29122_CommonData.yaml#/components/responses/default'
components:
securitySchemes:
oAuth2ClientCredentials:
type: oauth2
flows:
clientCredentials:
tokenUrl: '{tokenUrl}'
scopes: {}
schemas:
PfdManagement:
description: Represents a PFD management resource for a PFD management request.
type: object
properties:
self:
$ref: 'TS29122_CommonData.yaml#/components/schemas/Link'
supportedFeatures:
$ref: 'TS29571_CommonData.yaml#/components/schemas/SupportedFeatures'
pfdDatas:
type: object
additionalProperties:
$ref: '#/components/schemas/PfdData'
minProperties: 1
description: >
Each element uniquely identifies the PFDs for an external application identifier.
Each element is identified in the map via an external application identifier as key.
The response shall include successfully provisioned PFD data of application(s).
pfdReports:
type: object
additionalProperties:
$ref: '#/components/schemas/PfdReport'
minProperties: 1
description: >
Supplied by the SCEF and contains the external application identifiers for which PFD(s)
are not added or modified successfully. The failure reason is also included.
Each element provides the related information for one or more external application
identifier(s) and is identified in the map via the failure identifier as key.
readOnly: true
notificationDestination:
$ref: 'TS29122_CommonData.yaml#/components/schemas/Link'
requestTestNotification:
type: boolean
description: >
Set to true by the SCS/AS to request the SCEF to send a test notification as defined
in clause 5.2.5.3. Set to false or omitted otherwise.
websockNotifConfig:
$ref: 'TS29122_CommonData.yaml#/components/schemas/WebsockNotifConfig'
required:
- pfdDatas
PfdData:
description: >
Represents a PFD request to add, update or remove PFD(s) for one external application
identifier.
type: object
properties:
externalAppId:
type: string
description: Each element uniquely external application identifier
self:
$ref: 'TS29122_CommonData.yaml#/components/schemas/Link'
pfds:
type: object
additionalProperties:
$ref: '#/components/schemas/Pfd'
description: >
Contains the PFDs of the external application identifier. Each PFD is identified in
the map via a key containing the PFD identifier.
allowedDelay:
$ref: 'TS29122_CommonData.yaml#/components/schemas/DurationSecRm'
cachingTime:
$ref: 'TS29122_CommonData.yaml#/components/schemas/DurationSecRo'
required:
- externalAppId
- pfds
Pfd:
description: Represents a PFD for an external Application Identifier.
type: object
properties:
pfdId:
type: string
description: Identifies a PDF of an application identifier.
flowDescriptions:
type: array
items:
type: string
minItems: 1
description: >
Represents a 3-tuple with protocol, server ip and server port for UL/DL application
traffic. The content of the string has the same encoding as the IPFilterRule AVP
value as defined in IETF RFC 6733.
urls:
type: array
items:
type: string
minItems: 1
description: >
Indicates a URL or a regular expression which is used to match the significant parts
of the URL.
domainNames:
type: array
items:
type: string
minItems: 1
description: Indicates an FQDN or a regular expression as a domain name matching criteria.
dnProtocol:
$ref: '#/components/schemas/DomainNameProtocol'
required:
- pfdId
PfdReport:
description: >
Represents a PFD report indicating the external application identifier(s) which PFD(s)
are not added or modified successfully and the corresponding failure cause(s).
type: object
properties:
externalAppIds:
type: array
items:
type: string
minItems: 1
description: >
Identifies the external application identifier(s) which PFD(s) are not added or
modified successfully
failureCode:
$ref: '#/components/schemas/FailureCode'
cachingTime:
$ref: 'TS29122_CommonData.yaml#/components/schemas/DurationSec'
locationArea:
$ref: '#/components/schemas/UserPlaneLocationArea'
required:
- externalAppIds
- failureCode
UserPlaneLocationArea:
description: >
Represents location area(s) of the user plane functions which are unable to enforce the
provisioned PFD(s) successfully.
type: object
properties:
locationArea:
$ref: 'TS29122_CommonData.yaml#/components/schemas/LocationArea'
locationArea5G:
$ref: 'TS29122_CommonData.yaml#/components/schemas/LocationArea5G'
dnais:
type: array
items:
$ref: 'TS29571_CommonData.yaml#/components/schemas/Dnai'
minItems: 0
description: Identifies a list of DNAI which the user plane functions support.
PfdManagementPatch:
description: >
Represents the parameters to request the modification of a PFD management transaction
resource.
type: object
properties:
pfdDatas:
type: object
additionalProperties:
$ref: '#/components/schemas/PfdData'
minProperties: 1
notificationDestination:
$ref: 'TS29122_CommonData.yaml#/components/schemas/Link'
FailureCode:
anyOf:
- type: string
enum:
- MALFUNCTION
- RESOURCE_LIMITATION
- SHORT_DELAY
- APP_ID_DUPLICATED
- PARTIAL_FAILURE
- OTHER_REASON
- type: string
description: >
This string provides forward-compatibility with future
extensions to the enumeration but is not used to encode
content defined in the present version of this API.
description: |
Represents the failure reason of the PFD management.
Possible values are:
- MALFUNCTION: This value indicates that something functions wrongly in PFD provisioning
or the PFD provisioning does not function at all.
- RESOURCE_LIMITATION: This value indicates there is resource limitation for PFD storage.
- SHORT_DELAY: This value indicates that the allowed delay is too short and PFD(s)
are not stored.
- APP_ID_DUPLICATED: The received external application identifier(s) are already
provisioned.
- PARTIAL_FAILURE: The PFD(s) are not provisioned to all PCEFs/TDFs/SMFs.
- OTHER_REASON: Other reason unspecified.
DomainNameProtocol:
anyOf:
- type: string
enum:
- DNS_QNAME
- TLS_SNI
- TLS_SAN
- TSL_SCN
- type: string
description: >
This string provides forward-compatibility with future
extensions to the enumeration but is not used to encode
content defined in the present version of this API.
description: |
Represents the type of Domain Name Protocol.
Possible values are:
- DNS_QNAME: Identifies the DNS protocol and the question name in DNS query.
- TLS_SNI: Identifies the Server Name Indication in TLS ClientHello message.
- TLS_SAN: Identifies the Subject Alternative Name in TLS ServerCertificate message.
- TSL_SCN: Identifies the Subject Common Name in TLS ServerCertificate message.