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HMRC internal manual

Tax Credits Manual

HM Revenue & Customs
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Specialist areas - Specialist Trace: Specialist Trace Unit - IT systems (Info)

Child Benefit Index (CBIX)

This system can be used to search for the Child Benefit reference number using the

  • child’s name and date of birth
  • customer’s name and address
  • or
  • the first three letters of the surname and the first letter of the child’s forename.

Child Benefit Online (CBOL) System

Enter the Child Benefit reference number to check whether

  • Child Benefit Office holds a NINO for the customer or child
  • the children’s details are correct.

Access to DWP Data (ADD)

This system holds records for everyone who has a National Insurance number (NINO) and details of any benefits that have been, or are, in payment to them. The following screens can be found on the ADD system. There is a brief description for each of how and why you use it.

  • Account Summary

    • this screen is used to view an individual’s personal and benefit details and, if applicable, details of their partner.
  • Person Trace

    • this screen is used to trace a NINO using a combination of

    • forename
    • surname
    • sex
    • date of birth or approximate date of birth
    • possible NINO
    • address
    • post code.
  • Address Trace

    • this is used to trace details of all NINOs that have had an interest at an address by using a combination of

    • post code
    • building name and number
    • street
    • town.

A successful trace allows you to view Occupancy History details, which shows details of individuals who have used an address.