3411 Unknown identifier found in "is expression valid" function expression

Advantage Error Guide

Problem: An error occurred in the Advantage Expression Engine parser. An identifier within the "is expression valid" function expression is unknown to the parser.

Solution: This error is usually caused by the use of memory variables within the "is expression valid" function expression. The Advantage Expression Engine does not support memory variables. The variables are visible only to the client. This error may also result from a misspelled field name or from a field name that does not exist in the current work area.