Getting "getInternalId()' is null" error (model driven archetype)

[NutanNandanwar]

I am using model-driven archetype.

In the workflow i am using action and in the workflow i am using out param which will accept the object returned by that action so while running the workflow i am getting the below error

convertToResult() --> Finder 'test:obj' : unexpected error 'ch.dunes.model.sdk.SDKFinderException: convertToResult() --> Finder 'test:obj' id 'getInternalId()' is null for the Finder object 'obj'.

Please help. Thanks in advance.

[iiliev]

Which vRO version is this?

Also, if possible, please attach the source code of your plug-in. It is hard to guess what exactly is the problem without seeing how the finders/scripting objects are implemented.