API Documentation
1. Introduction
Provide an overview of the document, its purpose, and scope.
1.1 Purpose of the Document
Explain the purpose of the API Documentation and its importance in
the project lifecycle.
1.2 Document Control
Include version history, document approvals, and distribution list.
1.3 Scope of the Document
Define the scope of the APIs covered in this documentation, including
frontend-backend and SAP S/4 HANA integration.
2. API Endpoints
Detail the endpoints available for interaction with the system.
2.1 Endpoint Overview
Explain the structure and organization of API endpoints.
2.2 Endpoint List
List all API endpoints with:
Endpoint URL: URL path for the endpoint.
HTTP Method: HTTP method (e.g., GET, POST) used for the
endpoint.
Description: Purpose and functionality of the endpoint.
Parameters: Required and optional parameters for each
endpoint.
2.3 Endpoint Examples
Provide examples of usage for each endpoint, including sample
requests and responses.
3. Request/Response Formats
Define the formats for requests and responses exchanged with the
APIs.
3.1 Request Format
Detail the structure and content requirements for API requests,
including:
Headers: Required headers (e.g., Content-Type, Authorization).
Body: JSON or XML structure of the request payload.
Examples: Sample requests demonstrating various scenarios.
3.2 Response Format
Specify the structure and content of API responses, including:
Headers: Standard and custom headers returned in responses.
Body: JSON or XML structure of the response payload.
Examples: Sample responses for successful and error scenarios.
4. Authentication Methods
Describe the methods used to authenticate and authorize API access.
4.1 Authentication Overview
Explain the authentication mechanisms implemented for API security.
4.2 Authentication Types
Detail the types of authentication supported (e.g., OAuth2, API keys).
4.3 Authentication Process
Provide step-by-step instructions for authenticating API requests.
4.4 Authorization
Explain how access permissions are managed and enforced for API
endpoints.
5. Error Handling
Define how errors and exceptions are handled in API responses.
5.1 Error Handling Overview
Explain the approach to handling errors in API interactions.
5.2 Error Response Format
Specify the structure of error responses, including:
HTTP Status Codes: Commonly used status codes (e.g., 200,
400, 500).
Error Codes: Unique codes identifying specific errors.
Error Messages: Descriptions of errors returned to clients.
Examples: Sample error responses illustrating different
scenarios.
5.3 Error Recovery
Provide guidance on how clients should interpret and recover from
errors.
6. SAP S/4 HANA Integration
Detail the APIs and integration points specific to SAP S/4 HANA.
6.1 Integration Overview
Explain the integration architecture and objectives with SAP S/4
HANA.
6.2 SAP S/4 HANA APIs
List and describe APIs and endpoints related to SAP S/4 HANA
integration.
6.3 Data Exchange
Outline how data is exchanged between frontend-backend systems
and SAP S/4 HANA.
7. Appendix
Include any additional information that supports the API
Documentation.
7.1 Glossary of Terms
Define key terms used in the document related to APIs and
integration.
7.2 Reference Documents
List any related documents, specifications, or standards referenced in
the document.
7.3 Diagrams and Examples
Include additional diagrams, flowcharts, or examples that enhance
understanding of API usage and integration.
8. Approvals
Document the necessary approvals from key stakeholders.
8.1 Approval Signatures
Provide spaces for signatures and dates from stakeholders who
approve the document.
9. Revision History
Track changes made to the document over time.
9.1 Version History
Document the version number, date, author, and a brief summary of
changes for each version of the API Documentation.
