It is currently not possible to pass additional variables from an error event, such as a detailed error message, etc., to the catching execution.

This applies to

• error events
• code that throws BpmnError, such as delegates, listeners, etc.

In particular, if you have a catch-all error handler, then it is not possible to find out which error was caught.

Proposed solution:

The catching error handler defines the name of a Variable into which the error code of a message can be mapped:

<boudaryEvent attachedToRef="...">
  <errorEventDefinition errorRef="myError" camunda:errorCodeVariable="someVariableName" />
</boundaryEvent>

The variable with name "someVariableName" will then contain the error code of the error which was caught.