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

Number of rows in table OF24.03.01.07 should be equal to number of rows in table OF24.03.01.03 (OF24.03.01.03, OF24.03.01.02, OF24.03.01.07, Bank of England check boe_b0919_10)

A blocking check on the market risk: IMA backtesting and P&L_Part 3 - Trading desk general information (MKR IMA2) (OF24.03.01.03), market risk: IMA backtesting and P&L_Part 2- Firm-wide risk measures information (MKR IMA2) (OF24.03.01.02) and market risk: IMA backtesting and P&L_Part 7 - Trading desk Actual P&L (MKR IMA2) (OF24.03.01.07) 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.

The rule in plain words

Number of rows in table OF24.03.01.07 should be equal to number of rows in table OF24.03.01.03

In Market risk: IMA backtesting and P&L_Part 3 - Trading desk general information (MKR IMA2) (OF24.03.01.03): "Desk changes" (column 0030) must be reported, and "T" (column 0020) in Market risk: IMA backtesting and P&L_Part 7 - Trading desk Actual P&L (MKR IMA2) (OF24.03.01.07) must be reported.

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 OF24.03.01 as reported.

The cells it reads

Market risk: IMA backtesting and P&L_Part 2- Firm-wide risk measures information (MKR IMA2) (OF24.03.01.02)

Row

  • R0040Actual P&L

Column

  • C0010T

Market risk: IMA backtesting and P&L_Part 3 - Trading desk general information (MKR IMA2) (OF24.03.01.03)

Column

  • C0030Desk changes

Market risk: IMA backtesting and P&L_Part 7 - Trading desk Actual P&L (MKR IMA2) (OF24.03.01.07)

Column

  • C0020T

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}.

not(isNull({t: OF24.03.01.03, c: 0030})) and not(isNull({t: OF24.03.01.07, c: 0020}))

Every PRA banking rule on OF24.03.01.03

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.