The following XML expression checks for the existence of a first name and will raise an error if the first name field is

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The following XML expression checks for the existence of a first name and will raise an error if the first name field is empty.

Where should this expression be located?

The Following X 1 (4.4 KiB) Viewed 48 times

A. Inside the <form> element of a form only
B. Inside the master container element within the form
C. Inside the main table element of the data schema.
D. Inside an external JavaScript file which is linked to from within a form container.