Question1Replies40Views DhanasekarC0202 Member since 2017 8 posts Tekclan Solutions Posted: 2 months agoLast activity: 2 months 2 weeks ago Rule-Obj-When not found in the rulebase Failed to find a 'RULE-OBJ-WHEN' with the name 'PYPARAMETERINOUT' that applies to 'Embed-NameValuePair'; no rules with this name were found in the rulebase.Did anybody come across this above issue ? i have seen this error in my pega logs. Any insights will be helpful ***Edited by Moderator Marissa to update General to Product*** . Pega Platform 8.3 User Interface Technology Services ×Close popoverFacebookTwitterLinkedinEmail Copy Link Copied! Posted: 2 months agoSusanLiu_GCS PEGA replied to DhanasekarC0202Hi, The error message indicates that your application tried to find the WHEN rule "pyParameterInOut" under "Embed-NameValuePair" class, but it was not there. I checked my Pega 8.3 system. This WHEN rule is an OOTB one in "Pega-ProcessEngine:08-01-01". So, it should be there. Please do a private edit on it and see if it is picked up by your application. If yes, then it is a caching issue. You may need to do a revalidate and save on it.