Invalid Type: com.appiancorp.kougar.mapper.exceptions.ReturnException:

I am facing some issues converting portal reports to tempo reports using getPortalReportDataSubset() and executePortalReportForSail() and need urgent help:

1. Are task properties supported on tempo reports?
2. I have a report where one of the column's data is obtained using toGroup(tp!Assignees) expression. This report on conversion using getPortalReportDataSubset() doesnot show group names but shows data in the format [Group:174]. Need explanation on this.
3. What is the difference between both the functions listed above?
4. I have converted 2 graphical reports using executePortalReportForSail() but the reports produce the same error message:

An Error Has Occurred
Invalid Type: com.appiancorp.kougar.mapper.exceptions.ReturnException: null unable to convert <5> of type <class java.lang.Long> to type <class java.lang.String>

Seems there is a typeconversion problem but I am not able to debug it since I've not used "Long" datatype anywhere.
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OriginalPostID-94512

OriginalPostID-94512