This note is for Tibco Business Works 5.8 and Tibco Designer 5.6.

When validating a Service Agent in Tibco BusinessWorks I got the following error message:

The implementation type [BusinessWorks Process Definition] is not valid.

It turned out that the Service Context resource the Service Agent was using had been renamed. So I fixed the name of the Service Context in the corresponding file, with extension .serviceagent.

Then I went to tab Configuration, tab Endpoint Bindings and clicked the button Advanced (next to the text Operations). In the new screen I reloaded the data structures in tabs Input Headers and Output Headers and fixed the mappings in tabs Input Context and Output Context.

My Service Agent still did not validate. It turned out that the process that was linked to one of its operations had to validate as well. So after I fixed a couple of mappings in this process the Service Agent validated without errors.