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

"Own funds requirements" multiplied by 12.5 must equal "Total risk exposure amount" (OF22.00.01.01, Bank of England check v0625_m)

A blocking check on the market risk: standardised approaches for foreign exchange risk (MKR SA FX) template (OF22.00.01.01), 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.

The rule in plain words

In row "Total positions" (0010) of Market risk: standardised approaches for foreign exchange risk (MKR SA FX) (OF22.00.01.01): "Own funds requirements" (column 0090) multiplied by 12.5 must equal "Total risk exposure amount" (column 0100).

This is a blocking check. A return that fails it is normally rejected, so fix it before you submit. It runs only when your filing indicators mark OF22.00.01 as reported.

The cells it reads

Market risk: standardised approaches for foreign exchange risk (MKR SA FX) (OF22.00.01.01)

Row

  • R0010Total positions

Columns

  • C0090Own funds requirements
  • C0100Total risk exposure amount

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 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:

v0625_m: [OF22.00.01.01] {r0010, c0090} * 12.5 = {r0010, c0100}
Show the formulaShow

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

{t: OF22.00.01.01, r: 0010, c: 0090} * 12.5 = {t: OF22.00.01.01, r: 0010, c: 0100}

Every PRA banking rule on OF22.00.01.01

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.