Purpose:ISBN_NO is the primary argument for an XML Import validation that checks that incoming data is a valid ISBN or ISSN number. If on the initial look, the data is not an ISBN or ISSN the validation will remove any extra characters including any appended, and check again. For instance 0-7897-2441-3 and 0/7897/2441/3 (pb) will both pass the test and be imported, but ISBN: 0-7897-2441-3 and 0-7897-2441-4 will not.
If the incoming data is not an ISBN or ISSN, nothing will be imported to the field.
Argument Structure: Enter ISBN_NO as the validation. There are no further arguments.
