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Error on adding new Customer Data association



Error displays when user adds new Customer Data association in the Pega Marketing portal. 

Error Messages

Unable to determine class of given instance request
GenerateRuntimeDFs - Error generating data flow, CustomerData. The following error occurred: .pyModelProcess.pyShapes(Compose12).pyComposeIntoProperty: ** '.<somepropertyname>' is not of class '' or any of its ancestors
.pyModelProcess.pyShapes(Compose12).pyComposeConditions(1).pyRightExpr: This field may not be blank.

Steps to Reproduce

  1. Add a new association to Customer class
  2. Update the Manage Data Relationship landing page with the new association
  3. Save the form


Root Cause

A defect in Pegasystems’ code or rules. The issue occurs as the Dataset rule in the associated class already exists and the name of the association rule does not match the case of the existing Dataset name. The issue pertains to upgradation as the associated Dataset rules and Association rules are created in the previous Pega Marketing version.


Perform the following local-change:
  1. Delete the existing Datasets
  2. Save the Manage Data Relationship landing page



Published November 29, 2018 - Updated December 2, 2021

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