Line4

1 min readWarningBank of England banking taxonomy 4.1.1Updated 11 November 2026

If "% Of IRB in approach applied" is not less than 0.95, "% Of retail exposures in IRB pools" must be reported (C14.00.01.01, Bank of England check v7368_m)

A warning on the detailed information on securitisations (CR SEC Details) template (C14.00.01.01), in the own funds (PRA001) return.

Line4 Check runs it on the own funds (PRA001) return, proven on test files, check by check: the same outcome on all three test files of that return.

Check your file for this ruleWhat to do if it fails

The rule in plain words

In Detailed information on securitisations (CR SEC Details) (C14.00.01.01): if "% Of IRB in approach applied" (column 0171) is not less than 0.95, "% Of retail exposures in IRB pools" (column 0222) must be reported.

What to do if your return fails it

  1. 01Open the table below and find the cells the rule reads.
  2. 02The check applies only when its first part holds in your return. When it does, the second part must hold too: fix the second part, or correct the first.
  3. 03The Bank of England allows a small rounding difference, worked out from the decimals each value is reported with.
  4. 04It runs only when your filing indicators mark C14.00.01 as reported.
  5. 05This is a warning. It does not stop the return on its own, but your supervisor may ask you to explain it.

The cells it reads

Detailed information on securitisations (CR SEC Details) (C14.00.01.01)

Columns

  • C0171% Of IRB in approach applied
  • C0222% Of retail exposures in IRB pools

Which returns it applies to

Line4 Check runs it on the own funds (PRA001) return on Bank of England banking taxonomy 4.1.1. The Bank of England applies it to own funds (PRA001) returns, as a warning.

The Bank’s own words and formula

The plain words above spell out the Bank’s formula, with each cell named from its templates. In the Bank of England’s list of validations, word for word:

v7368_m: [C14.00.01.01 (All rows)] if {c0171} >= 0.95 then {c0222} != empty
Show the formulaShow

The Bank of England's formula. Cells are written as {t: table, r: row, c: column}.

if {t: C14.00.01.01, c: 0171} >= 0.95 then not(isNull({t: C14.00.01.01, c: 0222})) else true()

Every PRA banking rule on C14.00.01.01

Checks like this one, run at the point of submission, are the first step to real-time supervision. Line4 builds SupTech software for financial regulators that runs checks like these as each return arrives.