Event ID 41501 Thrown during Generate Unique Value Activity

[djryanj]

Hello,

This is for WAL version 2.19.0112.0.

I have a Generate Unique Value activity that is building a unique OfficePhone attribute. The XPath filter I am using is /Person[OfficePhone = '[//Value]']. Value expression (only one) of "+15555555555;ext="+[//UniquenessKey].

When this runs, it generates error events in the WAL log, with Event ID 41501, such as this:

Exception in 'ExpressionEvaluator : DetermineParameterType'. Details: MicrosoftServices.IdentityManagement.WorkflowActivityLibrary.Exceptions.InvalidExpressionException: The expression 'Person[OfficePhone = '' is invalid..

I'm not really sure what to make of this; I had the workflow succeed once, even though it threw these errors, when I turned on verbose logging, but in subsequent tests I have not seen it succeed; however, the above exception seems like a bug.

Thank you.

[NileshGhodekar]

I'm wondering if this has to do with + sign in the phone number which the parser may be misinterpreting as a + operator.. Does this work if you replace + sign in front of the country code with 00?

[djryanj]

@NileshGhodekar - removing the + was successful. The errors don't show up and the activity seems to complete correctly without it.