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

Detailed information on securitisations (CR SEC Details): "Detachment point (%)" must not be more than "Attachment point (%)" (C14.00.01.01, SC14.00.01.01, Bank of England check v7351_m)

A warning on the detailed information on securitisations (CR SEC Details) (C14.00.01.01) and detailed information on securitisations for SDDTs (SEC Details SDDT) (SC14.00.01.01) 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 Detailed information on securitisations (CR SEC Details) (C14.00.01.01): "Detachment point (%)" (column 0251) must not be more than "Attachment point (%)" (column 0231).

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 C14.00.01 as reported.
  5. 05This 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

Detailed information on securitisations (CR SEC Details) (C14.00.01.01)

Columns

  • C0231Attachment point (%)
  • C0251Detachment point (%)

Detailed information on securitisations for SDDTs (SEC Details SDDT) (SC14.00.01.01)

Columns

  • C0231Attachment point (%)
  • C0251Detachment point (%)

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 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:

v7351_m: [C14.00.01.01 (All rows)] {c0251} <= {c0231}
Show the formulaShow

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

{t: C14.00.01.01, c: 0251} <= {t: C14.00.01.01, c: 0231}

Every PRA banking rule on C14.00.01.01

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.