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

Total exposures row 0170 should be the sum of all aggregate exposure class rows (OF09.01.01.01, SC09.01.01.01, Bank of England check boe_b0730)

A blocking check on the geographical breakdown of exposures by residence of the obligor: SA exposures (OF CR GB 1) (OF09.01.01.01) and geographical breakdown of exposures by residence of the obligor (SA EXPOSURES) (CR GB 1) (SC09.01.01.01) 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

Total exposures row 0170 should be the sum of all aggregate exposure class rows

In each of 7 columns (listed below) of Geographical breakdown of exposures by residence of the obligor: SA exposures (OF CR GB 1) (OF09.01.01.01): "Total exposures" (row 0170) must equal the sum of 15 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  3. 03If they differ, a part is missing, a value sits in the wrong cell, or the total is out of date.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 OF09.01.01 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

Geographical breakdown of exposures by residence of the obligor: SA exposures (OF CR GB 1) (OF09.01.01.01)

Rows

  • R0010Central governments or central banks
  • R0020Regional governments or local authorities
  • R0030Public sector entities
  • R0040Multilateral Development Banks
  • R0050International Organisations
  • R0060Institutions
  • R0070Corporates
  • R0080Retail
  • R0090Real estate exposures
  • R0100Exposures in default
  • R0110Exposures associated with particularly high risk
  • R0120Eligible covered bonds
  • R0140Collective investments undertakings (CIU)
  • R0150Subordinated debt, equity and other own funds instruments
  • R0160Other items
  • R0170Total exposures

Columns

  • C0010Original exposure pre conversion factors
  • C0050General credit risk adjustments
  • C0055Specific credit risk adjustments
  • C0060Write offs
  • C0061Additional value adjustments and other own funds reductions
  • C0075Exposure value
  • C0090Risk-weighted exposure amount

Geographical breakdown of exposures by residence of the obligor (SA EXPOSURES) (CR GB 1) (SC09.01.01.01)

Rows

  • R0010Central governments or central banks
  • R0020Regional governments or local authorities
  • R0030Public sector entities
  • R0040Multilateral Development Banks
  • R0050International Organisations
  • R0060Institutions
  • R0070Corporates
  • R0080Retail
  • R0090Real estate exposures
  • R0100Exposures in default
  • R0110Exposures associated with particularly high risk
  • R0120Eligible covered bonds
  • R0140Collective investments undertakings (CIU)
  • R0150Subordinated debt, equity and other own funds instruments
  • R0160Other items
  • R0170Total exposures

Columns

  • C0010Original exposure pre conversion factors
  • C0050General credit risk adjustments
  • C0055Specific credit risk adjustments
  • C0060Write offs
  • C0061Additional value adjustments and other own funds reductions
  • C0075Exposure value
  • C0090Risk-weighted exposure amount

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 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: OF09.01.01.01, r: 0170} = sum({t: OF09.01.01.01, r: 0010; 0020; 0030; 0040; 0050; 0060; 0070; 0080; 0090; 0100; 0110; 0120; 0140; 0150; 0160})

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

scope({t: OF09.01.01.01, c:0010;0050;0055;0060;0061;0075;0090, f: banking, fv: banking_reporting})

Every PRA banking rule on OF09.01.01.01

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.