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Support Article

Unable to view an Agent's activity parameters after upgrade



After upgrading from PRPC 6.2 SP2 to Pega 7.1.9, when a developer clicks the "Params" button to view an Agent's activity parameters, and error is shown on the screen.

Error Messages

Activity Parameters
A processing error has occurred
Object key
Error Message <%= StringUtils.decodeCrossOSString(Param.pyErrorMessage); %>
Stack Trace

Steps to Reproduce

  1. Open an Agent.
  2. Click "Params" button to the right of the "Activity name" field.
  3. Observe the error message on screen.

Root Cause

A defect in Pegasystems’ code or rules.


Perform the following local-change:
Run Revalidate and Save on the affected activities.



Published February 9, 2016 - Updated October 8, 2020

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