Infor SyteLine

SyteLine REST API Development Guide

SyteLine exposes its business logic layer through REST API endpoints that provide direct access to IDO (Intelligent Data Objects) operations. Unlike legacy SOAP interfaces, the REST API supports modern authentication via OAuth 2.0, returns JSON payloads, and integrates cleanly with contemporary front-end frameworks and middleware platforms. Understanding the IDO-to-endpoint mapping is essential for building reliable integrations.

REST Endpoint Structure and IDO Access

SyteLine's REST API follows a predictable URL pattern rooted in the IDO name. Each IDO exposes standard CRUD operations at /IDORequestService/ido/load/{IDOName}, /ido/update/{IDOName}, and /ido/invoke/{MethodName}. The Load endpoint accepts filter expressions, property lists, and paging parameters that translate directly to SQL WHERE clauses against the underlying SL tables like SLItems, SLCos, and SLJobRoutes.

  • Use GET /ido/load/SLItems?filter=item LIKE 'ABC%'&properties=item,description,UM to query item master
  • POST /ido/update/SLCos with JSON body to create or update customer orders in the SLCos table
  • Invoke custom IDO methods via POST /ido/invoke/MethodName with typed parameters in request body
  • Apply paging with RecordCap and Bookmark parameters for large result sets exceeding 500 rows
  • Use the /ido/propertymeta/{IDOName} endpoint to discover available properties and data types

Authentication and Session Management

SyteLine REST API authentication uses either OAuth 2.0 bearer tokens (recommended for ION API Gateway access) or session-based authentication via the /IDORequestService/ido/token endpoint. OAuth tokens are issued by Infor IFS (Infor Federation Services) and must include the correct scope for the target SyteLine tenant. Session tokens expire after a configurable timeout and must be refreshed to avoid 401 responses mid-integration.

  • Configure OAuth 2.0 client credentials flow in IFS for service-to-service integrations
  • Request tokens with scope targeting the SyteLine tenant: lid://infor.slrest.{tenant}
  • Pass Authorization: Bearer {token} header with every REST API request
  • Implement token refresh logic 60 seconds before expiry to prevent authentication gaps
  • Use session-based auth via POST /ido/token for legacy integrations not routed through ION

Error Handling and Performance Optimization

SyteLine REST API returns structured error responses with IDO-specific error codes and messages. Common issues include property validation failures (HTTP 400), authentication expiry (HTTP 401), and IDO-level business rule violations that return 200 with an error payload. Performance tuning focuses on limiting property lists, using server-side filtering, and batching related operations to reduce round-trips.

  • Parse the ErrorCode and ErrorMessage fields in the response body for IDO business rule violations
  • Limit properties parameter to only required fields to reduce payload size and SQL query complexity
  • Use filter expressions with indexed columns (item, co_num, job) to leverage SyteLine table indexes
  • Batch related load/update operations using the IDO request collection endpoint for atomic processing
  • Implement exponential backoff retry for 503 responses during SyteLine application pool recycling

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