Custom Script Fetch Values From Master

To pull a value of a link on selection, use the add_fetch method.

add_fetch(link_fieldname, source_fieldname, target_fieldname)


You create Custom Field VAT ID (vat_id) in Customer and Sales Invoice and want to make sure this value gets updated every time you select a Customer in a Sales Invoice.

Then in the Sales Invoice Custom Script, add this line:


Next: Date Validation