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1 min readBlockingBank of England taxonomy 2.2.0Updated 11 November 2026

Reinsurer and collateral provider entity information and outwards reinsurance balance sheet exposures: a conditional check (IR.30.05, IR.31.01, Bank of England rule IR_bv0059_03)

A blocking check on the reinsurer and collateral provider entity information (IR.30.05) and outwards reinsurance balance sheet exposures (IR.31.01) templates, in the annual group (ARG) return.

Check your file for this ruleWhat to do if it fails

The rule in plain words

If a unique value for "Code of reinsurer, preceded by type of code" (C0050) is reported in IR.31.01.04 then this unique value must also be present in "Code of the Reinsurer Entity or Collateral Provider, preceded by type of code" (C0010) for columns C0030, C0040, C0050, C0070, and C0080 reported in template IR.30.05.01

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 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. 03It runs only when your filing indicators mark IR.30.05 and IR.31.01 as reported.
  4. 04This is a blocking check. A return that fails it is normally rejected, so fix it before you submit.

The cells it reads

Reinsurer and collateral provider entity information (IR.30.05.01.01)

Columns

  • C0030Legal name of reinsurer or collateral provider
  • C0040Type of reinsurer or collateral provider
  • C0050Country of residency
  • C0070Name of ECAI
  • C0080Internal rating

Outwards reinsurance balance sheet exposures (IR.31.01.04.01)

Column

  • C0010Legal name of reinsured undertaking

Which returns it applies to

Line4 Check runs it on annual group (ARG) return on Bank of England taxonomy 2.2.0. The Bank of England applies it to annual group (ARG) returns, as a blocking check.

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}.

if not(isNull({t: IR.31.01.04.01, c: C0010, z: Z0001})) then not(isNull({t: IR.30.05.01.01, c: C0030})) and not(isNull({t: IR.30.05.01.01, c: C0040})) and not(isNull({t: IR.30.05.01.01, c: C0050})) and not(isNull({t: IR.30.05.01.01, c: C0070})) and not(isNull({t: IR.30.05.01.01, c: C0080})) else true()

Every Solvency UK rule on IR.30.05

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.