1 min readBlockingBank of England taxonomy 2.2.0Updated 11 November 2026

Reinsurer and collateral provider entity information: the format of a code or text (IR.30.05, Bank of England rule IR_bv2640)

A blocking check on the reinsurer and collateral provider entity information template (IR.30.05), in the annual solo (ARS), annual group (ARG) and annual third-country branch (ARB) returns.

The rule in plain words

The item "Identification code of reinsurer or collateral provider and type of code" (IR.30.05.01.01 C0010) is not in a valid format: a code starting with LSY/ should be LSY/ followed by four digits

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 table below and find the cells the rule reads.
  2. 02Compare the code or text in your return with the format the rule sets out, character by character, including any prefix and any spaces.
  3. 03This 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
  • C0060External rating assessment by ECAI
  • C0070Name of ECAI
  • C0080Internal rating

Which returns it applies to

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

The Bank’s own words and formula

In the Bank of England’s list of validations, word for word:

dim:EO doesn't follow Lloyd’s Syndicate Code (LSY) pattern of "LSY/" followed by four digits.
Show the formulaShow

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

if matches(dim($v0,$[boec_dim:EO]), "^LSY/.*") then matches(dim($v0,$[boec_dim:EO]), "^LSY/[0-9]{4}$") 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.