error handling in Camunda

Summary

The provided content discusses error handling in Camunda, detailing how to manage errors using event subprocesses and matching error details between throw and catch events.

Abstract

The article focuses on the methodology for handling errors within Camunda, a workflow and decision automation platform. It explains that when a process encounters an error, an event subprocess can be used to catch and manage it effectively. The key is to ensure that the error details specified in the throw event match those in the catch event, using "dataError" as an example. The article further elaborates on handling multiple errors by setting the error fields in the throw event and leaving the catch event error fields empty to capture all errors. Illustrations are provided to demonstrate the configuration of BPMN (Business Process Model and Notation) files for both single and multiple error scenarios. Additionally, the article references other Camunda-related topics for further reading.

Opinions

The author suggests that matching error details between the throw and catch events is crucial for proper error handling in Camunda.
It is implied that using an event subprocess to handle errors is a standard and effective approach within Camunda.
The author provides a specific strategy for dealing with multiple errors, advocating for a broad catch event to handle all potential errors without specifying individual details.
The inclusion of multiple visual examples indicates the author's emphasis on the importance of clear and accurate BPMN modeling for error handling.
By linking to a range of other Camunda topics, the author seems to encourage continuous learning and exploration of Camunda's capabilities beyond just error handling.

error handling in Camunda

Today we gonna learn how to handle an error in camunda.

In this example, the first process will throw an error, and the event subprocess will catch it. just we need to put in both event(the throw and catch) the same Error details,for this example (dataError)

The Bpmn file:

Now lets suppose that we gonna throw N error not only one, the solution is to set only the Error fields in the throw event error, and let the Error field of the catch event error empty.

example:

and for the catch event must be empty like this: because it will catch all the error event

all The bpmn file: