The ten-year average Total number of exclusions takes into account the sum of the annual amounts over the previous years from T to T-9 (OF16.00.01.05, SC16.00.01.05, Bank of England check boe_b0807)

The rule in plain words

What to do if your return fails it

1. 01Open the tables below and find the cells the rule reads.
2. 02The check applies only when its first part holds in your return. When it does, the second part must hold too: fix the second part, or correct the first.
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 OF16.00.01.05 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

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 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.

Other rules on Operational risk: part 5 - historical losses (OPR) (OF16.00.01.05)

Every PRA banking rule on OF16.00.01.05

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.