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

Operational risk: part 4 - business indicator and subcomponents (OPR): a total must equal the sum of its parts (OF16.00.01.04, OF16.00.01.03, SC16.00.01.03 and others, Bank of England check boe_b0457)

A blocking check on the operational risk: part 4 - business indicator and subcomponents (OPR) (OF16.00.01.04), operational risk: part 3 - business indicator component (OPR) (OF16.00.01.03), operational risk: part 3 - business indicator component (OPR) (SC16.00.01.03) and operational risk: part 4 - business indicator and subcomponents (OPR) (SC16.00.01.04) 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

The BI is the sum of the three components: Interest, Lease and Dividend Component (ILDC), Services Component (SC) and Financial Component (FC) in this table

In column "Component value" (0050) of Operational risk: part 4 - business indicator and subcomponents (OPR) (OF16.00.01.04): "Business Indicator (BI)" (row 0010) must equal the sum of "Interest, Lease and Dividend Component (ILDC)" (row 0040), "Services Component (SC)" (row 0220) and "Financial Component (FC)" (row 0350).

The headline gives only the template and the kind of check, because the rule is too long to say in a headline. The plain words above say all of it.

What to do if your return fails it

  1. 01Open the tables below and find the cells the rule reads.
  2. 02Add up the parts in your return and compare the result with the total.
  3. 03If they differ, a part is missing, a value sits in the wrong cell, or the total is out of date.
  4. 04The Bank of England allows a small rounding difference, worked out from the decimals each value is reported with.
  5. 05It runs only when your filing indicators mark OF16.00.01.04 as reported.
  6. 06This is a blocking check. A return that fails it is normally rejected, so fix it before you submit.

The cells it reads

Operational risk: part 3 - business indicator component (OPR) (OF16.00.01.03)

Row

  • R0020Bucket Amount

Column

  • C0010Amount

Operational risk: part 4 - business indicator and subcomponents (OPR) (OF16.00.01.04)

Rows

  • R0040Interest, Lease and Dividend Component (ILDC)
  • R0220Services Component (SC)
  • R0350Financial Component (FC)

Column

  • C0050Component value

Operational risk: part 3 - business indicator component (OPR) (SC16.00.01.03)

Row

  • R0020Bucket Amount

Column

  • C0010Amount

Operational risk: part 4 - business indicator and subcomponents (OPR) (SC16.00.01.04)

Rows

  • R0040Interest, Lease and Dividend Component (ILDC)
  • R0220Services Component (SC)
  • R0350Financial Component (FC)

Column

  • C0050Component value

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 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: OF16.00.01.04, r: 0010, c: 0050} = sum({t: OF16.00.01.04, r: 0040; 0220; 0350, c: 0050})

Every PRA banking rule on OF16.00.01.04

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.