Here you set an invoice for inorganic income / compensation for myDATA.
When the amount is not a normal sale of goods/services (e.g. compensation) and needs a special classification.
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
Often category1_5 with E3_570 (unusual income) or, if out of VAT scope, exemption reason 1 (articles 2 & 3). Follow the EMDI screenshots.