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Support Article

Agent Activity invoking DDF fails in pxRunSingleCaseDDF



When running a data decision flow(DDF) rule to read data from external Data source and convert/transform the data to write to a Pega Marketing table using the pxRunSingleCaseDDF API an error occurs. The DDF when run manually does not produce an error.


Caused by:
** Java Exception:     com.pega.dsm.dnode.api.dataflow.StageException: Exception in stage: CustomStage

Steps to Reproduce

  1. Call a working DDF sourced from a report definition pxRunSingleCaseDDF while tracing 
  2. Observe the error in the Pega Platform Tracer.

Root Cause

An issue in the custom application code or rules. The API activity pxRunSingleCaseDDF is designed to only run on abstract data sources and not the configured report definition.


Here’s the explanation for the reported behavior:


Published November 24, 2016 - Updated October 8, 2020

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