2 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 total must equal the sum of its parts (LV43.00.00.03, Bank of England check v0717_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.

The rule in plain words

Total non-financial exposures must equal to the sum of non-financial SME exposures and exposures other than SME exposures, reported in rows 0260 and 0270 of this column respectively.

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): "Non-financial" (row 0250) must equal the sum of "SME exposures" (row 0260) and "Exposures other than SME exposures" (row 0270).

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. 02Add up the parts in your return and compare the result with the total.
  3. 03If they differ, a part is missing, a value sits in the wrong cell, or the total is out of date.
  4. 04The Bank of England allows a small rounding difference, worked out from the decimals each value is reported with.
  5. 05It runs only when your filing indicators mark LV43.00.00.03 as reported.
  6. 06This 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

  • R0250Non-financial
  • R0260SME exposures
  • R0270Exposures other than SME exposures

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: 0250} = sum({t: LV43.00.00.03, r: 0260; 0270})

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.