Any delivery to Northern Ireland by a business now needs the customs declaration fields filling in to comply with the Windsor Framework. If there were fields available in the address book to store EORI and UKIMS numbers, these could be automatically added to a job rather than copy / paste entry, or manual entry which leads to errors. If the customer was not UKIMS registered and the account holder was declaring, the system could use the account holder's EORI number and UKIMS number stored in the company details field.