Runtime tools : Core components : Exceptions : Custom exception handling : How does custom exception handling work
  
How does custom exception handling work
The following is a description of how the toolkit uses custom exception handling:
When the application starts, initialization manager reads btt.xml to initialize all of the components, which include settings, trace, data, format, context, operation, processor, service, and invoker.
When the application reads configurations in btt.xml, the toolkit initializes the custom exception handler according to exceptionHandler tag.
The custom exception handler takes corresponding actions according to predefined custom logic if exceptions are caught.
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Custom exception handling