IS 18003 : Part 2 : 2021 Unified Data Exchange - Part 2 API Specifications

ICS 33.020, 35.020 LITD 28

New Standard from Last Update.


This Indian Standard (Part 2) defines the API specifications for the Data exchange interfaces identified in the Data exchange reference architecture described in Part 1 of this standard. The API specifications are defined for usage over HTTP protocol only.

The target audience for this standard (Part 2) is the community of software developers who may be the implementers of the Data exchange layer services or may be the users of the Data exchange layer, e.g., Data exchange data publishers or Data exchange data consumers wishing to write applications using data available with the Data exchange.


The standards given below contain provisions which, through reference in this text, constitute provisions of this standard. At the time of publication, the editions indicated were valid. All standards are subject to revision, and parties to agreements based on this standard are encouraged to investigate the possibility of applying the most recent editions of these standards.

IS No. Title

IS 18003 (Part 1): 2020 Unified Data Exchange Framework Part 1 Architecture

IS 18002 (Part 1): 2021 Unified Digital Infrastructure - Data Layer Part 1 Reference Architecture

IETF RFC 7231 “Hypertext Transfer Protocol (HTTP/1.1): Semantics and Content”. Available at https://

IETF RFC 7232 “Hypertext Transfer Protocol (HTTP/1.1): Conditional Requests”. Available at https://

IETF RFC 3986 “Uniform Resource Identifier (URI): Generic Syntax”. Available at html/rfc3986.

IETF RFC 8259 “The JavaScript Object Notation (JSON) Data Interchange Format”. Available at https://

IETF RFC 7946 “The GeoJSON Format”. Available at html/rfc7946.

IETF RFC 8141 “Uniform Resource Names (URNs)”. Available at https://

OGC 06-103r4 “OpenGIS® Implementation Standard for Geographic information - Simple feature access - Part 1: Common architecture”. Available at https://portal.opengeospatial. org/files/?artifact_id=25355.

JSON-LD 1.1 A JSON based serialization for linked data. W3C Recommendation, July 2020. Available at: https://www.

IETF RFC 7807 Problem Details for HTTP APIs. Available at: https://tools.ietf. org/html/rfc7807

ISO 8601-1 : 2019 Date and time - Representations for information interchange - Part 1: Basic rules Available at standard/70907.html

ISO 8601-2 : 2019 Date and time - Representations for information interchange - Part 2: Extensions Available at standard/70908.html

IETF RFC 2818 “HTTP Over TLS”. Available at rfc2818.

IETF RFC 5246 “The Transport Layer Security (TLS) Protocol Version 1.2”. Available at html/rfc5246.

ETSI GS CIM 009 V1.4.1 (2021-02) Context Information Management (CIM); NGSI- LD API. Available at: https:// CIM/001_099/009/01.04.01_60/ gs_CIM009v010401p.pdf.