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2 min readBlockingBank 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 v0627_m)

A blocking check 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.

Check your file for this ruleWhat to do if it fails

The rule in plain words

In each of "Long" (column 0020), "Short" (column 0030), "Long" (column 0040) and "Short" (column 0050) of Market risk: standardised approaches for foreign exchange risk (MKR SA FX) (OF22.00.01.01): "Total positions" (row 0010) must equal the sum of "Currencies closely correlated" (row 0020), "All other currencies (including CIUs treated as different currencies)" (row 0030) and "Gold" (row 0040).

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  3. 03If they differ, a part is missing, a value sits in the wrong cell, or the total is out of date.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 blocking check. A return that fails it is normally rejected, so fix it before you submit.

The cells it reads

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

Rows

  • R0010Total positions
  • R0020Currencies closely correlated
  • R0030All other currencies (including CIUs treated as different currencies)
  • R0040Gold

Columns

  • C0020Long
  • C0030Short
  • C0040Long
  • C0050Short

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

Rows

  • R0010Total positions
  • R0020Currencies closely correlated
  • R0030All other currencies (including CIUs treated as different currencies)
  • R0040Gold

Columns

  • C0020Long
  • C0030Short
  • C0040Long
  • C0050Short

A worked example

With simple numbers.

Illustrative values
Currencies closely correlated1,200
All other currencies (including CIUs treated as different currencies)800
Gold450
Together2,450
What the rule then expects

Total positions must then be 2,450.

2,450Passes
2,550Fails

A file that reports 2,450 passes. One that reports 2,550 fails, by 100.

The numbers are illustrative, reported to the unit, so the rounding tolerance does not change the result.

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 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:

v0627_m: [OF22.00.01.01 (c0020;0030;0040;0050)] {r0010} = {r0020} + {r0030} + {r0040}
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} = {t: OF22.00.01.01, r: 0020} + {t: OF22.00.01.01, r: 0030} + {t: OF22.00.01.01, r: 0040}

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

scope({t: OF22.00.01.01, c:0020;0030;0040;0050, 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.