2 min readWarningBank of England banking taxonomy 4.1.1Updated 11 November 2026

Market risk: standardised approaches for foreign exchange risk (MKR SA FX): a total must equal the sum of its parts (OF22.00.01.01, SC22.00.01.01, Bank of England check v4907_m)

A warning on the market risk: standardised approaches for foreign exchange risk (MKR SA FX) (OF22.00.01.01) and information on foreign exchange risk for SDDTs (MKR SA FX SDDT) (SC22.00.01.01) templates, in the own funds (PRA001) and own funds for SDDTs (PRA116) returns.

Line4 Check runs it on the own funds (PRA001) and own funds for SDDTs (PRA116) returns, proven on test files, check by check: the same outcome on all six test files of those returns.

The rule in plain words

In each of "Long" (column 0020) and "Short" (column 0030) of Market risk: standardised approaches for foreign exchange risk (MKR SA FX) (OF22.00.01.01): the sum of "Other assets and liabilities other than off-balance sheet items and derivatives" (row 0100), "Off-balance sheet items" (row 0110) and "Derivatives" (row 0120) must equal the sum of 35 cells (listed below).

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 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  3. 03If they differ, a part is missing, a value sits in the wrong cell, or the total is out of date.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 OF22.00.01 as reported.
  6. 06This is a warning. It does not stop the return on its own, but your supervisor may ask you to explain it.

The cells it reads

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

Rows

  • R0100Other assets and liabilities other than off-balance sheet items and derivatives
  • R0110Off-balance sheet items
  • R0120Derivatives
  • R0130Euro
  • R0140Lek
  • R0150Argentine Peso
  • R0160Australian Dollar
  • R0170Brazilian Real
  • R0180Bulgarian Lev
  • R0190Canadian Dollar
  • R0200Czech Koruna
  • R0210Danish Krone
  • R0220Egyptian Pound
  • R0230Pound Sterling
  • R0240Forint
  • R0250Yen
  • R0270Lithuanian Litas
  • R0280Denar
  • R0290Mexican Peso
  • R0300Zloty
  • R0310Romanian Leu
  • R0320Russian Ruble
  • R0330Serbian Dinar
  • R0340Swedish Krona
  • R0350Swiss Franc
  • R0360Turkish Lira
  • R0370Hryvnia
  • R0380US Dollar
  • R0390Iceland Krona
  • R0400Norwegian Krone
  • R0410Hong Kong Dollar
  • R0420New Taiwan Dollar
  • R0430New Zealand Dollar
  • R0440Singapore Dollar
  • R0450Won
  • R0460Yuan Renminbi
  • R0470Other
  • R0480Croatian Kuna

Columns

  • C0020Long
  • C0030Short

Information on foreign exchange risk for SDDTs (MKR SA FX SDDT) (SC22.00.01.01)

Rows

  • R0100Other assets and liabilities other than off-balance sheet items and derivatives
  • R0110Off-balance sheet items
  • R0120Derivatives
  • R0130Euro
  • R0140Lek
  • R0150Argentine Peso
  • R0160Australian Dollar
  • R0170Brazilian Real
  • R0180Bulgarian Lev
  • R0190Canadian Dollar
  • R0200Czech Koruna
  • R0210Danish Krone
  • R0220Egyptian Pound
  • R0230Pound Sterling
  • R0240Forint
  • R0250Yen
  • R0270Lithuanian Litas
  • R0280Denar
  • R0290Mexican Peso
  • R0300Zloty
  • R0310Romanian Leu
  • R0320Russian Ruble
  • R0330Serbian Dinar
  • R0340Swedish Krona
  • R0350Swiss Franc
  • R0360Turkish Lira
  • R0370Hryvnia
  • R0380US Dollar
  • R0390Iceland Krona
  • R0400Norwegian Krone
  • R0410Hong Kong Dollar
  • R0420New Taiwan Dollar
  • R0430New Zealand Dollar
  • R0440Singapore Dollar
  • R0450Won
  • R0460Yuan Renminbi
  • R0470Other
  • R0480Croatian Kuna

Columns

  • C0020Long
  • C0030Short

Which returns it applies to

Line4 Check runs it on the own funds (PRA001) and own funds for SDDTs (PRA116) returns on Bank of England banking taxonomy 4.1.1. The Bank of England applies it to own funds for SDDTs (PRA116) and own funds (PRA001) returns, as a warning.

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:

v4907_m: [OF22.00.01.01 (c0020;0030)] {r0100} + {r0110} + {r0120} = sum(r0130-0250) + sum(r0270-0480)
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: 0100} + {t: OF22.00.01.01, r: 0110} + {t: OF22.00.01.01, r: 0120} = ({t: OF22.00.01.01, r: 0130} + {t: OF22.00.01.01, r: 0140} + {t: OF22.00.01.01, r: 0150} + {t: OF22.00.01.01, r: 0160} + {t: OF22.00.01.01, r: 0170} + {t: OF22.00.01.01, r: 0180} + {t: OF22.00.01.01, r: 0190} + {t: OF22.00.01.01, r: 0200} + {t: OF22.00.01.01, r: 0210} + {t: OF22.00.01.01, r: 0220} + {t: OF22.00.01.01, r: 0230} + {t: OF22.00.01.01, r: 0240} + {t: OF22.00.01.01, r: 0250}) + (({t: OF22.00.01.01, r: 0270} + {t: OF22.00.01.01, r: 0280} + {t: OF22.00.01.01, r: 0290} + {t: OF22.00.01.01, r: 0300} + {t: OF22.00.01.01, r: 0310} + {t: OF22.00.01.01, r: 0320} + {t: OF22.00.01.01, r: 0330} + {t: OF22.00.01.01, r: 0340} + {t: OF22.00.01.01, r: 0350} + {t: OF22.00.01.01, r: 0360} + {t: OF22.00.01.01, r: 0370} + {t: OF22.00.01.01, r: 0380} + {t: OF22.00.01.01, r: 0390} + {t: OF22.00.01.01, r: 0400} + {t: OF22.00.01.01, r: 0410} + {t: OF22.00.01.01, r: 0420} + {t: OF22.00.01.01, r: 0430} + {t: OF22.00.01.01, r: 0440} + {t: OF22.00.01.01, r: 0450} + {t: OF22.00.01.01, r: 0460}) + ({t: OF22.00.01.01, r: 0470} + {t: OF22.00.01.01, r: 0480}))

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

scope({t: OF22.00.01.01, c:0020;0030, f: banking, fv: banking_reporting})

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.