How to start workflow using message start event

[rahiakela]

Hi,

I want to start a workflow using message start event. This is BPMN diagram that are deployed in Activiti enterprise and explain my idea.

I have mentioned message id in BPMN as follow: 

And created REST API as follow:

-Controller

Service

After implementing all these thing, I am getting the below error:

Please let me know what is wrong with my implementation.

[salaboy]

Have you checked the alternatives for that deprecated method that you are using? 

That's most likely to be the problem.