The expression you entered contains invalid syntax, or you need to enclose your text data in quotes.@You may have entered ...

The expression you entered contains invalid syntax, or you need to enclose your text data in quotes.@You may have entered an invalid comma or omitted quotation marks.
For example, if the Default Value property of a text field is ''Huey, Louie, and Dewey,'' it must be enclosed in quotes if you mean it as a literal text string. This avoids the confusion with the expression ''Huey Louie'' And ''Dewey''.@@1@@@1