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

The referenced data entries should be greater than or equal to zero (OF08.06.01.01, Bank of England check boe_b0319)

A warning on the credit risk and free deliveries: IRB approach to capital requirements: specialised lending slotting approach (CR IRB 6) template (OF08.06.01.01), 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

The referenced data entries should be greater than or equal to zero

In Credit risk and free deliveries: IRB approach to capital requirements: specialised lending slotting approach (CR IRB 6) (OF08.06.01.01): every value in the cells it covers must be zero or more.

What to do if your return fails it

  1. 01Open the table below and find the cells the rule reads.
  2. 02Look for a value below zero in these cells, such as an amount entered as a negative number.
  3. 03It runs only when your filing indicators mark OF08.06.01 as reported.
  4. 04This 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

Credit risk and free deliveries: IRB approach to capital requirements: specialised lending slotting approach (CR IRB 6) (OF08.06.01.01)

Rows

  • R0005Preferential
  • R0015Of which: substantially stronger
  • R0025Of which: less than 2.5 years remaining until maturity
  • R0035Other
  • R0045Less than 2.5 years remaining until maturity
  • R0055Other
  • R0065Satisfactory
  • R0075Weak
  • R0085Default
  • R0095Total

Columns

  • C0010Original exposure pre-conversion factors
  • C0020Exposure after CRM substitution effects pre-conversion factors
  • C0030Of which: off-balance sheet items
  • C0040Exposure value
  • C0050Of which: off-balance sheet items
  • C0060Of which: arising from counterparty credit risk
  • C0080Risk-weighted exposure amount
  • C0090Expected loss amount

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 warning.

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: OF08.06.01.01} >= 0

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

scope({t: OF08.06.01.01, r:0005;0015;0025;0035;0045;0055;0065;0075;0085;0095,c:0010;0020;0030;0040;0050;0060;0080;0090, f: banking, fv: banking_reporting})

Every PRA banking rule on OF08.06.01.01

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.