For DHL shipments destined for Northern Ireland from Great Britain, there are some fields which are required to be sent to ensure there are no delays at customs.
You can also learn more about UK INTERNAL MARKET SCHEME from DHL here: https://www.dhl.com/gb-en/ecommerce/uk/business-services/technical-specification-update.html
Shipment Movement Type Setting
For shipment going to Northern Ireland from Great Britain, you will need to choose a Shipment Movement Type. Please choose a Movement Type in your DHL setting:
Enter your UKIMS number in Shiptheory
In order to use the Green Lane you will need to provide us your company UKIMS number. Shiptheory will use it for shipment sending from Great Britain to Northen Ireland.
On this article from the UK government, you will need to read through a number of pre-requisites before you apply for one. Once you have a UKIMS number, you'll want to ensure it's entered in your companies Tax Numbers page along with your EORI number, if it isn't already.
Production Commodify Informaton
You will need to include products information in your shipment as if you are shippping Internationally.