Line4

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

Exposures to revolving products shall be less than or equal to total exposures (OF08.01.01.01, OF02.00.01.01, Bank of England check boe_b0378_1)

A blocking check on the credit and counterparty credit risks and free deliveries: IRB approach to capital requirements (CR IRB 1) (OF08.01.01.01) and own funds requirements (CA2) (OF02.00.01.01) 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.

Check your file for this ruleWhat to do if it fails

The rule in plain words

Exposures to revolving products shall be less than or equal to total exposures

In each of 25 columns (listed below) of Credit and counterparty credit risks and free deliveries: IRB approach to capital requirements (CR IRB 1) (OF08.01.01.01): "Of which: Exposures to revolving loan commitments" (row 0017) must not be more than "Total exposures" (row 0010).

What to do if your return fails it

  1. 01Open the tables below and find the cells the rule reads.
  2. 02Compare the values in your return. If the first is bigger than it may be, one of them is wrong: check both before you change either.
  3. 03The Bank of England allows a small rounding difference, worked out from the decimals each value is reported with.
  4. 04It runs only when your filing indicators mark OF08.01.01 as reported.
  5. 05This is a blocking check. A return that fails it is normally rejected, so fix it before you submit.

The cells it reads

Own funds requirements (CA2) (OF02.00.01.01)

Rows

  • R0271Institutions
  • R0295Corporates - Financial corporates and large corporates
  • R0296Corporates - Other general corporates SME
  • R0297Corporates - Other general corporates non-SME
  • R0310Exposures subject to the AIRB approach
  • R0350Corporates - Specialised lending exposures
  • R0355Corporates - Other general corporates SME
  • R0356Corporates - Other general corporates non-SME
  • R0382Retail - Secured by residential immovable property SME
  • R0383Retail - Secured by residential immovable property non-SME
  • R0384Retail - Secured by commercial immovable property SME
  • R0385Retail - Secured by commercial immovable property non-SME
  • R0390Retail - Qualifying revolving
  • R0400Retail - Other SME
  • R0410Retail - Other non-SME

Column

  • C0010All approaches

Credit and counterparty credit risks and free deliveries: IRB approach to capital requirements (CR IRB 1) (OF08.01.01.01)

Rows

  • R0010Total exposures
  • R0017Of which: Exposures to revolving loan commitments

Columns

  • C0020Original exposure pre-conversion factors
  • C0080Total inflows (+)
  • C0090Exposure after CRM substitution effects pre-conversion factors
  • C0101Volatility adjustment to the exposure
  • C0104Exposure after all CRM pre-conversion factors
  • C0110Exposure value
  • C0150Guarantees
  • C0160Credit derivatives
  • C0170Other funded credit protection
  • C0171AIRB: Cash on deposit
  • C0172Life insurance policies
  • C0173AIRB: Instruments held by a third party
  • C0180Eligible financial collateral
  • C0190Real estate
  • C0200Other physical collateral
  • C0210Receivables
  • C0251Risk-weighted exposure amount pre-adjustments
  • C0252Adjustment to risk-weighted exposure amount due to post-model adjustments
  • C0253Adjustment to risk-weighted exposure amount due to mortgage risk weight floor
  • C0254Unrecognised exposure adjustments
  • C0260Risk-weighted exposure amount
  • C0280Expected loss amount pre post- model adjustments
  • C0281Adjustment to expected loss amount due to post- model adjustments
  • C0282Expected loss amount after post- model adjustments
  • C0300Number of obligors

Sheets

  • S0001Total (AIRB approach)
  • S0002Total (FIRB approach and slotting approach)
  • S0006Institutions (FIRB approach)
  • S0009Corporates - Specialised Lending (AIRB approach)
  • S0010Corporates - Specialised Lending (FIRB approach or slotting approach)
  • S0011Corporates - Other general corporates - non-SME (AIRB approach)
  • S0012Corporates - Other general corporates - non-SME (FIRB approach)
  • S0015Retail - Qualifying revolving (AIRB approach)
  • S0016Retail - Other SME (AIRB approach)
  • S0017Retail - Other non-SME (AIRB approach)
  • S0018Retail - Secured by commercial immovable property SME (AIRB approach)
  • S0019Retail - Secured by commercial immovable property non-SME (AIRB approach)
  • S0020Retail - Secured by residential immovable property - SME (AIRB approach)
  • S0021Retail - Secured by residential immovable property non-SME (AIRB approach)
  • S0022Corporates - Financial corporates and large corporates (FIRB approach)
  • S0023Corporates - Other general corporates - SME (AIRB approach)
  • S0024Corporates - Other general corporates - SME (FIRB approach)

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}.

{t: OF08.01.01.01, r: 0017} <= {t: OF08.01.01.01, r: 0010}

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

scope({t: OF08.01.01.01, c:0020;0080;0090;0101;0104;0110;0150;0160;0170;0171;0172;0173;0180;0190;0200;0210;0251;0252;0253;0254;0260;0280;0281;0282;0300,z:0001;0002;0006;0009;0010;0011;0012;0015;0016;0017;0018;0019;0020;0021;0022;0023;0024, f: banking, fv: banking_reporting})

Every PRA banking rule on OF08.01.01.01

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.