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

Every value in 22 rows in column "Add-on" on 2 sheets must be zero or more (C34.03.01.01, Bank of England check v10327_s)

A warning on the counterparty credit risk: CCR exposures treated with standardised approaches: SA-CCR or simplified SA-CCR (CCR 3) template (C34.03.01.01), 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

In Counterparty credit risk: CCR exposures treated with standardised approaches: SA-CCR or simplified SA-CCR (CCR 3) (C34.03.01.01): every value in 22 rows (listed below) in column "Add-on" (column 0070) on 2 sheets 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 C34.03.01 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

Counterparty credit risk: CCR exposures treated with standardised approaches: SA-CCR or simplified SA-CCR (CCR 3) (C34.03.01.01)

Rows

  • R0010Total
  • R0050Interest rate risk
  • R0070Of which: largest currency
  • R0080Of which: 2nd largest currency
  • R0090Of which: 3rd largest currency
  • R0100Of which: 4th largest currency
  • R0110Of which: 5th largest currency
  • R0120Foreign exchange risk
  • R0140Of which: largest currency pair
  • R0150Of which: 2nd largest currency pair
  • R0160Of which: 3rd largest currency pair
  • R0170Of which: 4th largest currency pair
  • R0180Of which: 5th largest currency pair
  • R0190Credit risk
  • R0230Equity risk
  • R0270Commodity risk
  • R0290Energy
  • R0300Metals
  • R0310Agricultural goods
  • R0320Climatic conditions
  • R0330Other commodities
  • R0340Other risks

Column

  • C0070Add-on

Sheets

  • S0001SA-CCR
  • S0002Simplified SA-CCR

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 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:

v10327_s: [C34.03.01.01 (r0010;0050;0070;0080;0090;0100;0110;0120;0140;0150;0160;0170;0180;0190;0230;0270;0290;0300;0310;0320;0330;0340, c0070, All sheets)] {C34.03.01.01} >= 0
Show the formulaShow

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

{t: C34.03.01.01, r: 0010; 0050; 0070; 0080; 0090; 0100; 0110; 0120; 0140; 0150; 0160; 0170; 0180; 0190; 0230; 0270; 0290; 0300; 0310; 0320; 0330; 0340, c: 0070, z: 0001; 0002} >= 0

Every PRA banking rule on C34.03.01.01

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.