Field Name	Description	Type	Min	Max	Mandatory	Value Set
PassportDocument		PassportDocument			No
PassportDocument.PassportIssuingCountry	The country that issued the candidate's passport	String			Yes	country
PassportDocument.PassportNumber	The passport number	String	1*	11*	Yes
PassportDocument.PassportIssueDate	The date the candidate was issued with their passport	String (date)			No
PassportDocument.PassportExpiryDate	The date the candidate's passport is due to expire	String (date)			No
DrivingDocument		DrivingDocument			No
DrivingDocument.DriverLicenseType	The candidate's type of licence	String			Yes	licencetype
DrivingDocument.DriverLicenseIssuingCountry	The country that issued the candidate's driving licence	String			Yes	country
DrivingDocument.DriverLicenseNumber	The driving licence number	String	1**	50**	Yes**	country
DrivingDocument.DriverLicenseDate	The date the candidate's driving licence was issued	String (date)			Yes
NationalInsuranceNumberDocument		NationalInsuranceNumberDocument			No
NationalInsuranceNumberDocument.NationalInsuranceNumber	The candidate's national insurance number document number	String	8	9	No
NationalInsuranceNumberDocument.OverseasIdentityNumber		OverseasIdentityNumber			No
NationalInsuranceNumberDocument.OverseasIdentityNumber.IssuingCountry	The candidate's identity card issuing country	String			No	country
NationalInsuranceNumberDocument.OverseasIdentityNumber.IdentityNumber	The identity number of the candidate's identity number	String***	1	97	No

* If the issuing country is the UK the passport number must be 9 digits (0-9). If the issuing country is other than they UK the passport number can be 1-11 characters long and consist of any of the following:

• Alphabetic characters
• Numeric characters
• Hyphen
• Forward slash
• Single quote
• Ampersand
• Left parenthesis
• Right parenthesis

** If the issuing country is the UK the driving licence number must be valid using the candidate’s current name and date of birth¹. If the country is not the UK the driving licence number is optional and may be up to 50 characters. If not provided the default value is an empty string.

*** May contain:

• Characters of A-Za-z
• Characters of 0-9
• Hyphen
• Period

**** A UK driving license is validated again the rules DVLA use to create these driving license numbers

Each licence holder in England, Scotland and Wales has a unique driver number, which is 16 characters long. The characters are constructed in the following way:

• 1–5: The first five characters of the surname (padded with 9s if less than 5 characters)
• 6: The decade digit from the year of birth (e.g. for 1987 it would be 8)
• 7–8: The month of birth (7th character incremented by 5 if driver is female i.e. 51–62 instead of 01–12)
• 9–10: The date within the month of birth
• 11: The year digit from the year of birth (e.g. for 1987 it would be 7)
• 12–13: The first two initials of the first names, padded with a 9 if no middle name
• 14: Arbitrary digit – usually 9, but decremented to differentiate drivers with the first 13 characters in common
• 15–16: Two computer check digits.
• 17–18: Appended, two digits representing the licence issue, which increases by 1 for each licence issued. (*Optional)