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What is the cause of "12019: Unknown" error when publishing workflow?

Question asked by bangbang58 on Dec 1, 2015

I have a large workflow that creates as many as 42 Flexi-Tasks simultaneously using Parallel "Run If" actions. The FlexiTask forms are customized using InfoPath.

 

The workflow is started by a different workflow and returns values using Set Value in the called workflow.

 

The workflow has been publishing with no issues until I added a minor change to each branch in the Parallel logic. I now get a "12019: Unknown" error with no additional information.

 

Our "UserDefinedWorkflowMaximumComplexity" SharePoint 2013 farm setting is set to 24000.

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