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Validation Framework – Handling Business Errors MuleSoft

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MuleSoft Validation Framework – Handling Business Errors


In this tutorial of mulesoft validation we will create an exception handling framework that will generate business/logical error and do custom validations to request/response message while mapping mulesoft code and learn how to handle those error.
For example: The message that mulesoft application received should have some validations while mapping to the backend application request, in case of validation failure the application should throw an error with error message.

The validations are:
1. if a is (a < b or a < 10) then generate error with error message “A should not be less than 10 or b”.
2. all the values a or b or c or d sum should be less than 500 else generate error with message “a+b+c+d should be less than 500.”

The above example, can be resolved in couple of ways and we will see one of the most simplest and easy way by creating validation framework.
We will resolve by using dataweave and a custom exception class.
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