Line4

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

Delta risk Kb and Vega risk Kb for SA-CVA equity risk must be greater than or equal to zero (OF25.03.01.08, Bank of England check boe_b0926)

A blocking check on the credit valuation adjustment: standardised approach - Bucket level capital requirements for SA-CVA equity risk (CVA SA) template (OF25.03.01.08), 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

Delta risk Kb and Vega risk Kb for SA-CVA equity risk must be greater than or equal to zero

In Credit valuation adjustment: standardised approach - Bucket level capital requirements for SA-CVA equity risk (CVA SA) (OF25.03.01.08): every value in 13 rows (listed below) in 6 columns (listed below) 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 OF25.03.01.08 as reported.
  4. 04This is a blocking check. A return that fails it is normally rejected, so fix it before you submit.

The cells it reads

Credit valuation adjustment: standardised approach - Bucket level capital requirements for SA-CVA equity risk (CVA SA) (OF25.03.01.08)

Rows

  • R0010Consumer goods and services, transportation and storage, administrative and support service activities, healthcare, utilities
  • R0020Telecommunications, industrials
  • R0030Basic materials, energy, agriculture, manufacturing, mining and quarrying
  • R0040Financials including government-backed financials, real estate activities, technology
  • R0050Consumer goods and services, transportation and storage, administrative and support service activities, healthcare, utilities
  • R0060Telecommunications, industrials
  • R0070Basic materials, energy, agriculture, manufacturing, mining and quarrying
  • R0080Financials including government-backed financials, real estate activities, technology
  • R0090All sectors described in buckets under size "large" and region "emerging market economies"
  • R0100All sectors described in buckets under size "large" and region "advanced economies"
  • R0110Other sector
  • R0120Qualified index
  • R0130Qualified index

Columns

  • C0010Kb
  • C0020Kb component 1
  • C0030Kb component 2
  • C0040Kb
  • C0050Kb component 1
  • C0060Kb component 2

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: OF25.03.01.08, r: 0010; 0020; 0030; 0040; 0050; 0060; 0070; 0080; 0090; 0100; 0110; 0120; 0130, c: 0010; 0020; 0030; 0040; 0050; 0060} >= 0

Every PRA banking rule on OF25.03.01.08

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.