Today, SAP released some updates on Brexit. It looks like they want to go ahead with the region set-up, and not with a new country code for Northern Ireland.
However, they will introduce some new fields to maintain the XI registration numbers. These are not available yet and will be released in the next few days.
The release note is nr 28852 and can be found HERE (source: SAP – SAP Service marketplace login required) )
FYI: Full URL: https://launchpad.support.sap.com/#/notes/ 28852
