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1 min readWarningBank of England taxonomy 2.2.0Updated 11 November 2026

Non-life claim development: two values must match (IR.19.01, Bank of England rule IR_bv1994)

A warning on the non-life claim development template (IR.19.01), in the annual solo (ARS) and annual third-country branch (ARB) returns.

Check your file for this ruleWhat to do if it fails

The rule in plain words

The net RBNS claims in the last diagonal of net RBNS claims triangle {IR.19.01.01.17, rows 0500 to r0650, columns c1600 to c1750} must match the column for 'net RBNS claims - Current year' {IR.19.01.01.18, rows 0500 to r0650, column c1760}

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. 02The two values must be the same. Find which of the two is right, and correct the other one.
  3. 03It runs only when your filing indicators mark IR.19.01 as reported.
  4. 04This 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

Non-life claim development: net RBNS claims - development year (absolute amount) (IR.19.01.01.17)

Row

  • R0610N-4

Column

  • C16404

Non-life claim development: net RBNS claims - current year, sum of years (cumulative) (IR.19.01.01.18)

Row

  • R0610N-4

Column

  • C1760Year end

A worked example

With simple numbers.

Illustrative values
N-4, Year end1,200
What the rule then expects

N-4, 4 must then be 1,200.

1,200Passes
1,300Fails

A file that reports 1,200 passes. One that reports 1,300 fails, by 100.

The numbers are illustrative.

Which returns it applies to

Line4 Check runs it on annual solo (ARS) and annual third-country branch (ARB) returns on Bank of England taxonomy 2.2.0. The Bank of England applies it to annual solo (ARS) and annual third-country branch (ARB) returns, as a warning.

The Bank’s own words and formula

The plain words above are the Bank of England’s own, word for word, from its list of validations.

Show the formulaShow

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

{t: IR.19.01.01.17, r: R0610, c: C1640, z: Z0001} = {t: IR.19.01.01.18, r: R0610, c: C1760, z: Z0001}

Every Solvency UK rule on IR.19.01

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.