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Support Article

Unable to open rules in Pega Dev Studio



Error occurs on opening rules in Pega Dev Studio.

Error Messages

Section 'pzRuleFormKeysAndDescription' execution error on page 'RH_1' of  class 'some-class'.
java.lang.ClassCastException: com.pegarules.generated.html_property.ra_stream_pxdisplaytext_1365141955_default cannot be cast to

Action that failed: RuleForm - For class: Data-Portal - Current operator : 

Object key : - Read/Write : true

Error message : Section 'HarnessFail' execution error. : null

Steps to Reproduce

  1. Log in to Pega Dev Studio.
  2. Open any rule.

Root Cause

A defect in Pegasystems’ code or rules.


This feature is implemented in the following:
  • Pega Platform 8.3.1
  • Pega Platform 8.4

Published March 19, 2020 - Updated December 2, 2021

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