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Support Article

NullPointerException during auto-populate property copying

SA-17268

Summary



The application has been built using Reference properties to take advantage of memory savings and data consistency.
However, periodically when copying a page/page list that includes a reference this is generating a ConcurrentModificationException.

Error Messages



ConcurrentModificationException on the screen

Steps to Reproduce



Not Applicable

Root Cause


java.util.ConcurrentModificationException
  at java.util.AbstractList$SimpleListIterator.next(AbstractList.java:64)
  at com.pega.pegarules.data.internal.clipboard.ClipboardPageImpl.checkNamedPageForwardLinks(ClipboardPageImpl.java:3898)
  at com.pega.pegarules.data.internal.clipboard.ClipboardPageImpl.clear(ClipboardPageImpl.java:626)
  at com.pega.pegarules.data.internal.clipboard.ClipboardPageBase.replace(ClipboardPageBase.java:348)
  at com.pega.pegarules.data.internal.clipboard.ClipboardPageBase.replace(ClipboardPageBase.java:1105)
  at com.pega.pegarules.session.internal.mgmt.Executable.setStepPage(Executable.java:2332)
  at com.pegarules.generated.activity.ra_action_createworkpage_21b4306512305f343e292df526c0eb19.step9_circum0(ra_action_createworkpage_21b4306512305f343e292df526c0eb19.java:1091)
  at com.pegarules.generated.activity.ra_action_createworkpage_21b4306512305f343e292df526c0eb19.perform(ra_action_createworkpage_21b4306512305f343e292df526c0eb19.java:210)



Resolution



Apply HFix-24555
 

Published January 31, 2016 - Updated October 8, 2020

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