Here you set in EMDI how credit invoices for third-country or intra-EU supplies are sent to myDATA.
Use this when you issue a credit note related to an export / intra-EU supply and need the correct myDATA codes.
Open Settings → Tax connections → Variable mapping and fill the yellow myDATA fields on the related document / VAT. The basics are in the main myDATA mapping article.
On-screen steps
What the codes mean
In myDATA, credit invoices are usually type 5.1 (correlated) or 5.2 (non-correlated). Common income classifications for foreign sales are E3_561_005 (intra-EU) and E3_561_006 (third countries). Match the screenshot.