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Adding ISO Country Code to Electronic Bank Payments Payment File Template
Based on this community question, How to obtain by freemarker the ISO country code? — Oracle NetSuite Support Community, we are informed that the ability to pull up ISO Country codes instead of Country names is currently a system limitation in NetSuite.
However, some SEPA files require the ISO country code.
My solve for this is to add and make mandatory the "Country Code" freeform text field (custrecord_2663_entity_country_code) from the Bank Details record in the Payment file template in the "Entity Reference fields" section:
<refField id='custrecord_2663_entity_country_code' label='Country Code' mandatory='true' helptext="This field displays the international code assigned to the country where the bank is based."/>