Service message types
Form: DEVIntegMessageTypeService — External integration → Setup → Service message type
Registers synchronous X++ service classes (extending DEVIntegServiceExportBase) so they get standard logging and can be tested from the UI.

Key settings
- Service class — the X++ class implementing the service; see Service-based message types for the development pattern.
- Logging — per-service log level, from statistics-only to full request/response; the levels are described under Service call log.
Servicing
The Test button opens the Service test form with an auto-generated contract for the selected class — you can execute the service with real parameters without any external tool.