If Activity "Source" Is Null or Empty?

Sean McClurkan

November 04, 2015 20:02

Essentials 4.3.0 HTML5 2.4.0

 

I have an IF activity where I check the count of a FeatureSet before proceeding.  "If fsFolder.Count() > 0 "

 

The workflow processes into the True path for the IF activity, but when processing finishes, it throws the error below: There was a workflow error running activity: Exception has been thrown by the target of an invocation. Workflow 'FindROWPermits' failed Unhandled exception: 'Value cannot be null. Parameter name: source' in activity '1.15.1.334: If Folder Found'. Value cannot be null. Parameter name: source

 

What is the "source" parameter for the IF that it is finding to be NULL?

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  Kevin Penner

  November 05, 2015 01:27

  Check if "fsFolder is Nothing".

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  Sean McClurkan

  November 05, 2015 20:05

  Nope.  Still get the error.  I've confirmed that the workflow is processing without error all the way down all the TRUE pathways to the very end - and then throws this error.  I'm flummoxed.

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  Sean McClurkan

  November 05, 2015 20:36

  Oops. I had two containers with the same name.  The issue is a Reference Workflow has a FeatureSet out argument.  I populate the FeatureSet in the referenced workflow - confirm it is there and has values - but the calling workflow gets an empty (or non-existent) FeatureSet in return.

   

  What am I missing about getting the OUT argument from a Reference Workflow?

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