NINumber_01: The National Insurance number is not in the correct format
Official rule text
If the National insurance number has been recorded in the ILR it must be recorded in the following format the first character must not be D, F, I, Q, U or V and the second character must not be D, F, I, O, Q, U or V and characters 3 to 8 must be numeric and character 9 must be A, B, C, D or space.
The validation rule will trigger if the number recorded in the ILR is not in the above format.
The official wording, as published in ILR validation rules 2026 to 2027 for 2026–27 and imported on 19 September 2026. Check the source for the current version.
Learner.NINumber
Practical guidance
Not yet prepared. FEFunding has not yet written an explanation or corrective guidance for this validation rule. This page shows the official wording only. Use it with your own validation or funding reports, and with the official source below.
If guidance on this one would help you, tell us and we will take it into account when deciding what to write next.
Sources
The official text on this page was imported from this source on 19 September 2026. The status shown is our source monitor's, which watches the document for later changes.
Content reused from GOV.UK is Crown copyright, used under the Open Government Licence. FEFunding is not endorsed by the Department for Education.