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5.3.4.6.2 Delete EI job procedure
The procedure to delete EI job is based on the Delete EI job operation illustrated in figure 5.3.4.6.1-1.
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5.3.4.7 Query EI job status
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5.3.4.7.1 General
The A1-EI Consumer uses the Query EI job status operation to query the status of an EI job. The operation to query status for an EI job is based on HTTP GET. The EI job for which status is to be read is identified with a URI that includes the eiJobId while the message body is empty, and the response returns an EI job s...
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5.3.4.7.2 Query EI job status procedure
The procedure to query EI job status is based on the Query EI job status operation illustrated in figure 5.3.4.7.1-1.
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5.3.4.8 Notify EI job status
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5.3.4.8.1 General
The A1-EI Producer uses the Notify EI job status operation to notify the A1-EI Consumer about changes in status of an EI job. All notifications are sent to the URI for notification handling provided during EI job creation and the EiJobStatusObject contains the information about the status of the EI job. The operation t...
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5.3.4.8.2 Notify EI job status procedure
The procedure to notify EI job status is based on the Notify EI job status operation illustrated in figure 5.3.4.8.1-1.
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5.3.5 Service operations for A1 EI job result
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5.3.5.1 Introduction
Table 5.3.5.1-1 describes the mapping between the A1 EI job result operations, and the HTTP methods used to realize them, and the mandatory HTTP status codes. Table 5.3.5.1-1: A1 EI operations to HTTP methods mapping. Service operation HTTP method HTTP status codes Deliver EI job result POST 204, 400 The following clau...
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5.3.5.2 Deliver EI job result
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5.3.5.2.1 General
The A1-EI Producer uses the Deliver EI job result operation to deliver EI job results using push-based method. The push-based delivery method of EI is based on subscribe-notify paradigm where the EI job creation corresponds to the subscription and the delivery of EI job result is made using HTTP POST in the same way as...
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5.3.5.2.2 Deliver EI job result procedure
The procedure to deliver EI job result is based on the Deliver EI job result operation illustrated in figure 5.3.5.2.1-1.
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5.4 ML model management service
No explicit ML model service operations are defined in the present document.
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6 API Definitions
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6.1 Introduction
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6.1.1 Encoding of attributes in A1 data types
Identifiers and parameters that have been defined as integers are, when used over the A1 interface, encoded as JSON "number". Identifiers and parameters that have a hexadecimal or octet string representation are, when used over the A1 interface, encoded as JSON "string" with character ordering preserved and zeros filli...
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6.1.2 Compatibility of API versions for A1 services
The API version and API name for each of the A1 services are defined in the following clauses. The API version is a single digit that corresponds to the major version of the corresponding OpenAPI document in Annex A. Based on the versioning rules for the OpenAPI documents defined in the OpenAPI Specification [12], this...
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6.2 A1-P (policy management)
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6.2.1 Introduction
This clause contains the definition of the REST based API for the A1 policy management service referred to as A1-P. The present document defines API version 2 (v2) of the A1-P API. Based on the URI structure defined in clause 4.4.1 of ETSI TS 129 501 [6], the request URI used in HTTP request from the A1-P consumer towa...
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6.2.2 Usage of HTTP
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6.2.2.1 General
The A1 Transport, HTTP protocol and security requirements, is described in A1TP [3].
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6.2.2.2 HTTP standard headers
Encodings and applicable MIME media type for the related Content-Type header are not specified in this version of the present document.
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6.2.2.3 HTTP custom headers
No HTTP custom headers are specified in this version of the present document.
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6.2.3 Resources
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6.2.3.1 Overview
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6.2.3.1.1 Resource URI structure
The resource URI structure for the A1-P API is illustrated in figure 6.2.3.1.1-1. {apiRoot}/A1-P/v2 /{policyTypeId} /{policyId} /policytypes /status /policies Figure 6.2.3.1.1-1: Resource URI structure of the A1-P API
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6.2.3.1.2 Resources and methods
Table 6.2.3.1.2-1 provides an overview of the resources and HTTP methods defined for the A1-P API. ETSI ETSI TS 103 987 V4.3.0 (2025-05) 33 Table 6.2.3.1.2-1: Resources and methods overview Resource name Resource URI HTTP method or custom operation Description All Policy Type Identifiers /policytypes GET Query all poli...
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6.2.3.1.3 Policy type identifier
The PolicyTypeId is constructed based on two parts separated by "_" (underscore): typename_version where typename is the unique label of the policy type; version is the version of the policy type defined as major.minor.patch as described in SemVer [8]. The typename and version is assigned, and their uniqueness ensured,...
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6.2.3.2 Individual Policy Object
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6.2.3.2.0 General
The name of the resource is the PolicyId assigned by the A1-P Consumer when the policy is created.
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6.2.3.2.1 Description
The resource represents an A1 policy.
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6.2.3.2.2 Resource Definition
The Resource URI and the supported resource variables are as defined in previous clauses. ETSI ETSI TS 103 987 V4.3.0 (2025-05) 34
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6.2.3.2.3 Resource Standard Methods
6.2.3.2.3.1 HTTP PUT This method shall support the request data structures specified in table 6.2.3.2.3.1-1 and the response data structures and response codes specified in table 6.2.3.2.3.1-2. Table 6.2.3.2.3.1-1: Data structures supported by the HTTP PUT Request Body on this resource Data type P Cardinality Descripti...
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6.2.3.3 Individual Policy Status Object
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6.2.3.3.1 Description
The resource represents the status of an A1 policy.
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6.2.3.3.2 Resource Definition
The Resource URI and the supported resource variables are as defined in previous clauses.
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6.2.3.3.3 Resource Standard Methods
6.2.3.3.3.1 HTTP PUT Method is not supported on this resource. 6.2.3.3.3.2 HTTP GET This method shall support the request data structures specified in table 6.2.3.3.3.2-1 and the response data structures and response codes specified in table 6.2.3.3.3.2-2. Table 6.2.3.3.3.2-1: Data structures supported by the HTTP GET ...
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6.2.3.3.4 Resource Custom Operations
No custom operations are defined.
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6.2.3.4 All Policy Identifiers
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6.2.3.4.1 Description
The resource represents A1 policy identifiers.
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6.2.3.4.2 Resource Definition
The Resource URI and the supported resource variables are as defined in previous clauses.
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6.2.3.4.3 Resource Standard Methods
6.2.3.4.3.1 HTTP PUT Method is not supported on this resource. 6.2.3.4.3.2 HTTP GET This method shall support the request data structures specified in table 6.2.3.6.3.2-1 and the response data structures and response codes specified in table 6.2.3.6.3.2-2. Table 6.2.3.4.3.2-1: Data structures supported by the HTTP GET ...
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6.2.3.4.4 Resource Custom Operations
No custom operations are defined.
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6.2.3.5 All Policy Type Identifiers
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6.2.3.5.1 Description
The resource represents A1 policy type identifiers.
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6.2.3.5.2 Resource Definition
The Resource URI and the supported resource variables are as defined in previous clauses. ETSI ETSI TS 103 987 V4.3.0 (2025-05) 37
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6.2.3.5.3 Resource Standard Methods
6.2.3.5.3.1 HTTP PUT Method is not supported on this resource. 6.2.3.5.3.2 HTTP GET This method shall support the request data structures specified in table 6.2.3.5.3.2-1 and the response data structures and response codes specified in table 6.2.3.5.3.2-2. Table 6.2.3.5.3.2-1: Data structures supported by the HTTP GET ...
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6.2.3.5.4 Resource Custom Operations
No custom operations are defined.
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6.2.3.6 Individual Policy Type Object
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6.2.3.6.1 Description
The resource represents an A1 policy type.
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6.2.3.6.2 Resource Definition
The Resource URI and the supported resource variables are as defined in previous clauses.
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6.2.3.6.3 Resource Standard Methods
6.2.3.6.3.1 HTTP PUT Method is not supported on this resource. 6.2.3.6.3.2 HTTP GET This method shall support the request data structures specified in table 6.2.3.6.3.2-1 and the response data structures and response codes specified in table 6.2.3.6.3.2-2. ETSI ETSI TS 103 987 V4.3.0 (2025-05) 38 Table 6.2.3.6.3.2-1: D...
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6.2.3.6.4 Resource Custom Operations
No custom operations are defined.
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6.2.4 Custom Operations without associated resources
No custom operations are defined.
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6.2.5 Notifications
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6.2.5.1 Notify Policy Status
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6.2.5.1.1 Description
The resource represents the destination for policy status notifications.
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6.2.5.1.2 Resource Definition
The Resource URI is a callback URI provided as a query parameter in URL when creating a policy.
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6.2.5.1.3 Resource Standard Methods
6.2.5.1.3.1 HTTP PUT Method is not supported on this resource. 6.2.5.1.3.2 HTTP GET Method is not supported on this resource. 6.2.5.1.3.3 HTTP DELETE Method is not supported on this resource. ETSI ETSI TS 103 987 V4.3.0 (2025-05) 39 6.2.5.1.3.4 HTTP POST This method shall support the request data structures specified i...
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6.2.6 Data Model
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6.2.6.1 Introduction
This clause specifies the application protocol data model supported by the A1-P API. The data model for the data types transported in the A1-P procedures is defined in A1TD [4].
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6.2.6.2 Simple data types and enumerations
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6.2.6.2.1 Simple data types
The resource identifiers defined in clause 5.2.2.4 include policy type identifier and policy identifier based on the simple data types specified in table 6.2.6.2.1-1. Table 6.2.6.2.1-1: General definition of simple data types Type Name Type Definition Description Applicability PolicyTypeId string policy type identifier...
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6.2.6.3 Structured data types
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6.2.6.3.1 Problem details
In case a policy request is not accepted, additional information can be provided in the response in addition to the HTTP error status code. The ProblemDetails statement specified in table 6.2.6.3.1-1 contains attributes defined in IETF RFC 7807 [10]: ETSI ETSI TS 103 987 V4.3.0 (2025-05) 40 Table 6.2.6.3.1-1: Definitio...
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6.2.7 Error Handling
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6.2.7.1 General
HTTP error handling shall be supported as specified in clause 5.2.4 of ETSI TS 129 500 [11] and according to the principles in ETSI TS 129 501 [6].
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6.2.7.2 Protocol Errors
No protocol errors are described in the present document.
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6.2.7.3 Application Errors
The application errors defined for the A1-P service are listed in table 6.2.7.3-1. Table 6.2.7.3-1: Application errors Application Error HTTP status code Description Bad Request 400 Used when the Near-RT RIC or the Non-RTR RIC cannot or will not process a request, e.g. when the validation of PolicyObject towards a poli...
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6.3 A1-EI (enrichment information)
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6.3.1 Introduction
This clause contains the definition of the REST based API for the A1 enrichment information Service referred to as A1- EI. The present document defines API version 1 (v1) of the A1-EI API. Based on the URI structure defined in clause 4.4.1 of ETSI TS 129 501 [6], the request URI used in HTTP request from the A1-EI cons...
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6.3.2 Usage of HTTP
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6.3.2.1 General
The A1 Transport, HTTP protocol and security requirements, is described in A1TP [3].
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6.3.2.2 HTTP standard headers
Encodings and applicable MIME media type for the related Content-Type header are not specified in this version of the present document.
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6.3.2.3 HTTP custom headers
No HTTP custom headers are specified in the present document.
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6.3.3 Resources
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6.3.3.1 Overview
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6.3.3.1.1 Resource URI structure
The resource URI structure for the A1-EI API is illustrated in figure 6.3.3.1.1-1. {apiRoot}/A1-EI/v1 /{eiTypeId} /eiTypes /eiJobs /{eiJobId} /status Figure 6.3.3.1.1-1: Resource URI structure of the A1-EI API ETSI ETSI TS 103 987 V4.3.0 (2025-05) 42
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6.3.3.1.2 Resources and methods
Table 6.3.3.1.2-1 provides an overview of the resources and HTTP methods defined for the A1-EI API. Table 6.3.3.1.2-1: Resources and methods overview Resource name Resource URI HTTP method or custom operation Description All EI Type Identifiers /eitypes GET Query all EI type identifiers Individual EI Type /eitypes/{eiT...
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6.3.3.1.3 EI type identifier
The EiTypeId is constructed based on two parts separated by "_" (underscore): typename_version where typename is the unique label of the EI type; version is the version of the EI type defined as major.minor.patch as described in SemVer [8]. The typename and version is assigned, and their uniqueness ensured, by the orga...
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6.3.3.2 All EI Type Identifiers
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6.3.3.2.1 Description
The resource represents EI type identifiers.
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6.3.3.2.2 Resource Definition
The Resource URI and the supported resource variables are as defined in previous clauses. ETSI ETSI TS 103 987 V4.3.0 (2025-05) 43
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6.3.3.2.3 Resource Standard Methods
6.3.3.2.3.1 HTTP GET This method shall support the request data structures specified in table 6.3.3.2.3.1-1 and the response data structures and response codes specified in table 6.3.3.2.3.1-2. Table 6.3.3.2.3.1-1: Data structures supported by the HTTP GET Request Body on this resource Data type P Cardinality Descripti...
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6.3.3.2.4 Resource Custom Operations
No custom operations are defined.
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6.3.3.3 Individual EI Type
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6.3.3.3.1 Description
The resource represents an EI type.
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6.3.3.3.2 Resource Definition
The Resource URI and the supported resource variables are as defined in previous clauses.
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6.3.3.3.3 Resource Standard Methods
6.3.3.3.3.1 HTTP GET This method shall support the request data structures specified in table 6.3.3.3.3.1-1 and the response data structures and response codes specified in table 6.3.3.3.3.1-2. Table 6.3.3.3.3.1-1: Data structures supported by the HTTP GET Request Body on this resource Data type P Cardinality Descripti...
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6.3.3.3.4 Resource Custom Operations
No custom operations are defined. ETSI ETSI TS 103 987 V4.3.0 (2025-05) 44
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6.3.3.4 All EI Jobs
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6.3.3.4.1 Description
The resource represents EI job identifiers.
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6.3.3.4.2 Resource Definition
The Resource URI and the supported resource variables are as defined in previous clauses.
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6.3.3.4.3 Resource Standard Methods
6.3.3.4.3.1 HTTP GET This method shall support the request data structures specified in table 6.3.3.4.3.1-1 and the response data structures and response codes specified in table 6.3.3.4.3.1-2. Table 6.3.3.4.3.1-1: Data structures supported by the HTTP GET Request Body on this resource Data type P Cardinality Descripti...
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6.3.3.5 Individual EI Job
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6.3.3.5.1 Description
The resource represents an EI job.
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6.3.3.5.2 Resource Definition
The Resource URI and the supported resource variables are as defined in previous clauses.
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6.3.3.5.3 Resource Standard Methods
6.3.3.5.3.1 HTTP PUT This method shall support the request data structures specified in table 6.3.3.5.3.1-1 and the response data structures and response codes specified in table 6.3.3.5.3.1-2. ETSI ETSI TS 103 987 V4.3.0 (2025-05) 45 Table 6.3.3.5.3.1-1: Data structures supported by the HTTP PUT Request Body on this r...
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6.3.3.5.4 Resource Custom Operations
No custom operations are defined.
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6.3.3.6 Individual EI Job Status