Market risk: internal model approach 1A (MKR IMA1A): the total unconstrained expected shortfall for the previous day (OF24.01.01.01, Bank of England check boe_b0678)

The rule in plain words

What to do if your return fails it

1. 01Open the table 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 OF24.01.01 as reported.
5. 05This is a blocking check. A return that fails it is normally rejected, so fix it before you submit.

The cells it reads

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.

Other rules on Market risk: internal model approach 1A (MKR IMA1A) (OF24.01.01.01)

Every PRA banking rule on OF24.01.01.01

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.