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¿Error during login post Pega 7.1.7 upgrade



After upgrading to Pega 7.1.7, you encounter an exception when you login with a user ID other than [email protected]

Error Messages

2015-06-05 14:12:47,730 [] [  STANDARD] [                    ] [] (ngineinterface.service.HttpAPI) ERROR | 502401201 - : PRRuntimeError
Caused by: ** Multiple suitable instances of this function CompareDates found. Please be more specific when calling this function by providing  library and ruleset
                at com.pega.pegarules.priv.FUAUtil.activityPreTranIndeterminateConditionalCheck(
                at com.pegarules.generated.activity.ra_action_requestorinitialize_e36b881f68a2367add1154c991cf4f4e.step17_circum0(
                at com.pegarules.generated.activity.ra_action_requestorinitialize_e36b881f68a2367add1154c991cf4f4e.perform(
                at com.pega.pegarules.session.internal.mgmt.Executable.doActivity(
                at com.pega.pegarules.session.internal.mgmt.Executable.invokeActivity(
                at com.pegarules.generated.activity.ra_action_applicationsetup_474c9bc165dec30eef62154f01ed8d0c.step10_circum0(
                at com.pegarules.generated.activity.ra_action_applicationsetup_474c9bc165dec30eef62154f01ed8d0c.perform(
                at com.pega.pegarules.session.internal.mgmt.Executable.doActivity(
                at com.pega.pegarules.session.internal.mgmt.base.ThreadRunner.runActivitiesAlt(

Steps to Reproduce

1. Upgrade to Pega 7.1.7.
2. Ensure you have Pega Energy framework installed. Log in with a user ID other than 
[email protected] to observe the issue.

Root Cause

There are multiple copies of CompareDates function in the system, One CompareDates function belongs to Date library of Energy framework and other belongs to DateTime library of PegaRULES, due to which the engine gets confused on which function to pick.


This issue is resolved by HFix-22613.

Published June 23, 2015 - Updated October 8, 2020

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