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

Output floor - RWA for modelled approaches (OFL): total should be the sum of all columns (OF02.01.01.01, C24.00.01.01, Bank of England check boe_b0724)

A blocking check on the output floor - RWA for modelled approaches (OFL) (OF02.01.01.01) and market risk: internal models (MKR IM) (C24.00.01.01) templates, 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

Total should be the sum of all columns

In column "RWA for modelled approaches" (0010) of Output floor - RWA for modelled approaches (OFL) (OF02.01.01.01): "Total" (row 0080) must equal the sum of 6 rows (listed below).

What to do if your return fails it

  1. 01Open the tables 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  3. 03If they differ, a part is missing, a value sits in the wrong cell, or the total is out of date.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 OF02.01.01 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

Market risk: internal models (MKR IM) (C24.00.01.01)

Row

  • R0010Total positions

Column

  • C0130Total risk exposure amount

Output floor - RWA for modelled approaches (OFL) (OF02.01.01.01)

Rows

  • R0010Credit risk (excluding counterparty credit risk)
  • R0020Counterparty credit risk
  • R0030Credit valuation adjustment
  • R0040Securitisation exposures in the banking book
  • R0070Residual RWA
  • R0080Total

Column

  • C0010RWA for modelled approaches

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 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: OF02.01.01.01, r: 0080, c: 0010} = sum({t: OF02.01.01.01, r: 0010; 0020; 0030; 0040; 0050; 0070, c: 0010})

Every PRA banking rule on OF02.01.01.01

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.