Question 2 Replies 308 Views × Close popover Subhajit Chattopadhyay (SubhajitChattopadhya) Infosys Australia Lead System Architect Infosys Australia AU View Profile Send Message SubhajitChattopadhya Member since 2010 36 posts Infosys Australia Posted: May 24, 2017 Last activity: June 9, 2017 Posted: 24 May 2017 1:24 EDT Last activity: 9 Jun 2017 9:23 EDT Closed BadClassDefinitionException in logs for Pega 7.1.9 Dear Team, We are having a lot of BadClassDefinitionException in logs and it seems most of these are occurring either for ExecuteSLA or ProcessEvent activities. We are using Pega 7.1.9. Could you please let me know if this can be prevented or what are the preventive measures we should be considering for mitigating this issue? Thanks and Regards, Subhajit ***Updated by moderator: Lochan to close post*** Data Integration Java and Activities Share × Close popover Facebook Twitter Linkedin Email Copy Link Copied! Moderation Team has archived post, learn more × Close popover This thread is closed to future replies. Content and links will no longer be updated. If you have the same/similar Question, please write a new Question. Posted: 3 years ago Posted: 24 May 2017 2:48 EDT × Close popover Subhajit Chattopadhyay (SubhajitChattopadhya) Infosys Australia Lead System Architect Infosys Australia AU View Profile Send Message SubhajitChattopadhya Infosys Australia replied to SubhajitChattopadhya Enclosing the log snippet Posted: 3 years ago Posted: 31 May 2017 16:47 EDT × Close popover Maarten Veger (MaartenV9058) Rabobank Lead BPM Architect & Pega CLSA Rabobank NL View Profile Send Message MaartenV9058 Rabobank replied to SubhajitChattopadhya You have a top level or embedded page with an empty value for property pxObjClass or it's missing. Use the tracer to pinpoint which page has the problem.