Line4

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

(LR4) Alternative breakdown of leverage ratio exposure measure components: Other non-trading book exposures (IRB): a value must not be more than another (LV43.00.00.03, Bank of England check v0714_m)

A blocking check on the (LR4) Alternative breakdown of leverage ratio exposure measure components: Other non-trading book exposures (IRB) template (LV43.00.00.03), in the leverage ratio (LVR001) return.

Line4 Check runs it on the leverage ratio (LVR001) return, proven on test files, check by check: the same outcome on all eight test files of that return.

Check your file for this ruleWhat to do if it fails

The rule in plain words

The value of exposures secured by mortgages of residential properties must be less than or equal to the total value of exposures secured by mortgages of immovable properties reported in this column.

In each of "Leverage Ratio Exposure Value: IRB Exposures" (column 0020) and "RWEA: IRB exposures" (column 0040) of (LR4) Alternative breakdown of leverage ratio exposure measure components: Other non-trading book exposures (IRB) (LV43.00.00.03): "of which: Secured by mortgages of residential properties" (row 0200) must not be more than "Secured by mortgages of immovable properties" (row 0190).

The headline gives only the template and the kind of check, because the rule is too long to say in a headline. The plain words above say all of it.

What to do if your return fails it

  1. 01Open the table below and find the cells the rule reads.
  2. 02Compare the values in your return. If the first is bigger than it may be, one of them is wrong: check both before you change either.
  3. 03It runs only when your filing indicators mark LV43.00.00.03 as reported.
  4. 04This is a blocking check. A return that fails it is normally rejected, so fix it before you submit.

The cells it reads

(LR4) Alternative breakdown of leverage ratio exposure measure components: Other non-trading book exposures (IRB) (LV43.00.00.03)

Rows

  • R0190Secured by mortgages of immovable properties
  • R0200of which: Secured by mortgages of residential properties

Columns

  • C0020Leverage Ratio Exposure Value: IRB Exposures
  • C0040RWEA: IRB exposures

Which returns it applies to

Line4 Check runs it on the leverage ratio (LVR001) return on Bank of England banking taxonomy 4.1.1. The Bank of England applies it to leverage ratio (LVR001) returns, as a blocking check.

The Bank’s own words and formula

The first paragraph of the plain words above is the Bank of England’s own, word for word, from its list of validations. The second spells out its formula, with each cell named from its templates.

Show the formulaShow

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

{t: LV43.00.00.03, r: 0200} <= {t: LV43.00.00.03, r: 0190}

Where it applies, in the Bank's words (its scope):

scope({t: LV43.00.00.03, c:0020;0040, f: banking, fv: leverage_ratio})

Every PRA banking rule on LV43.00.00.03

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.