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

Total positive unweighted delta senitivities of non-securitisations CSR (OF91.02.01.01, Bank of England check boe_b0412)

A blocking check on the market risk: ASA credit spread risk for non-securitisations (AS2 CSR) template (OF91.02.01.01), 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.

Check your file for this ruleWhat to do if it fails

The rule in plain words

Total positive unweighted delta senitivities of non-securitisations CSR

In Market risk: ASA credit spread risk for non-securitisations (AS2 CSR) (OF91.02.01.01): every value in 20 rows (listed below) in column "Positive" (column 0010) 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 OF91.02.01 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

Market risk: ASA credit spread risk for non-securitisations (AS2 CSR) (OF91.02.01.01)

Rows

  • R0010Total Credit spread risk for non-securitisations (CSR)
  • R0020Central government, including central banks, of a third country, multilateral development banks and international organisations referred to in Article 117(2) or Article 118 of the CRR
  • R0030Regional or local authority and public sector entities
  • R0040Financial sector entities including credit institutions incorporated or established by a central government, a regional government or a local authority and promotional lenders
  • R0050Basic materials, energy, industrials, agriculture, manufacturing, mining and quarrying
  • R0060Consumer goods and services, transportation and storage, administrative and support service activities
  • R0070Technology, telecommunications
  • R0080Health care, utilities, professional and technical activities
  • R0090Covered bonds issued by credit institutions
  • R0100Covered bonds issued by credit institutions
  • R0110Central government, including central banks, of a third country, multilateral development banks and international organisations referred to in Article 117(2) or Article 118 of the CRR
  • R0120Regional or local authority and public sector entities
  • R0130Financial sector entities including credit institutions incorporated or established by a central government, a regional government or a local authority and promotional lenders
  • R0140Basic materials, energy, industrials, agriculture, manufacturing, mining and quarrying
  • R0150Consumer goods and services, transportation and storage, administrative and support service activities
  • R0160Technology, telecommunications
  • R0170Health care, utilities, professional and technical activities
  • R0180‌Other sectors (not listed in rows '0020'-'0080')
  • R0190Listed credit indices with a majority of its individual constituents being investment grade
  • R0200Listed credit indices with a majority of its individual constituents being non-investment grade or unrated

Column

  • C0010Positive

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: OF91.02.01.01, r: 0010; 0020; 0030; 0040; 0050; 0060; 0070; 0080; 0090; 0100; 0110; 0120; 0130; 0140; 0150; 0160; 0170; 0180; 0190; 0200, c: 0010} >= 0

Every PRA banking rule on OF91.02.01.01

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.