It is highly recommended to use the default value of true.
If true and RAD PDF recognizes the input as an XFA form, RAD PDF will convert the form to the more commonly used AcroForms standard.
If false and ThrowXfaFormException is true, RAD PDF will throw an error if the input PDF contains an XFA form.
It is important to remember that not all forms using XFA can be converted to AcroForms. RAD PDF typically converts static XFA documents without issue, but RAD PDF does not typically support dynamic XFA documents. At this time, if the conversion to AcroForms fails, an exception is not always thrown.