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

Capital adequacy - memorandum items (CA4): "Non-domestic original exposures" must not be more than "Total original exposures" (C04.00.01.01, SC04.00.01.01, Bank of England check v4808_m)

A blocking check on the capital adequacy - memorandum items (CA4) (C04.00.01.01) and memorandum items for SDDTs (CA4 SDDT) (SC04.00.01.01) 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 column "Amount" (0010) of Capital adequacy - memorandum items (CA4) (C04.00.01.01): "Non-domestic original exposures" (row 0850) must not be more than "Total original exposures" (row 0860).

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 C04.00.01 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

Capital adequacy - memorandum items (CA4) (C04.00.01.01)

Rows

  • R0850Non-domestic original exposures
  • R0860Total original exposures

Column

  • C0010Amount

Memorandum items for SDDTs (CA4 SDDT) (SC04.00.01.01)

Rows

  • R0850Non-domestic original exposures
  • R0860Total original exposures

Column

  • C0010Amount

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:

v4808_m: [C04.00.01.01 (c0010)] {r0850} <= {r0860}
Show the formulaShow

The Bank of England's formula. Cells are written as {t: table, r: row, c: column}.

{t: C04.00.01.01, r: 0850, c: 0010} <= {t: C04.00.01.01, r: 0860, c: 0010}

Every PRA banking rule on C04.00.01.01

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.