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Support Article

Invalid Expression or reference error coming on screen



Customer  is using PegaKYC 6.2.5 on top of PRPC 6.2SP2. When the user tries to execute a ReportDefinition by applying the filters, the error is displayed on the screen.

Caused by: ** Invalid expression or reference: Multiple suitable instances found [seeking] @(null:null).getPropertyValue(ClipboardPage,String) [possible candidate functions are] @(PegaKYC:KYCUtils).getPropertyValue(ClipboardPage,String) @(Pega-ProCom:RuleManagement).getPropertyValue(ClipboardPage,String)

Error Messages

Error on screen:

** Invalid expression or reference: Multiple suitable instances found [seeking] @(null:null).getPropertyValue(ClipboardPage,String) [possible candidate functions are] @(PegaKYC:KYCUtils).getPropertyValue(ClipboardPage,String) @(Pega-ProCom:RuleManagement).getPropertyValue(ClipboardPage,String) SUGGESTION: Use full syntax for calling a function, Example- @(RuleSet:libraryname).functionname(arg1, arg2... argn) Rule-Utility-Function @.getPropertyValue(@pxGetParentPage(stepPage),"pzIsSummary") Invalid expression or reference: Operation "==" is not permitted on types: unknown and text ( @.getPropertyValue(@pxGetParentPage(stepPage),"pzIsSummary") == local.isUiSummary )

Steps to Reproduce

1. Create a report on PegaKYC application
2. Run the report by applying some filters and observe the error message displaying on screen

Root Cause

The root cause of this problem is a defect in Pegasystems’ code/rules.
In PegaKYC framework, there is a getPropertyValue function present in KYCUtils library which is present in KYC ruleset. There is a same function with same name present in RuleManagement library present in ProCom ruleset.
When user tries to run the report by applying some filters, reRunReport activity will be called which uses this getPropertyValue function.
But system is confusing which version of this function need to consider at run time, as there are two functions available with same name.


This issue is resolved by hotfix item HFIX-21232
As part of this hotfix, reRunReport activity is modified suchthat getPropertyValue function will be called along with Library
Eg: @(Pega-ProCom:RuleManagement).getPropertyValue(ClipboardPage,String)
Suggest Edit

Published January 31, 2016 - Updated October 8, 2020

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