Line4

1 min readBlockingEIOPA taxonomy 2.10.0Updated 11 November 2026

Basic information - list of underwriting entities: a conditional check (S.04.03, EIOPA rule BV2072)

A blocking check on the basic information - list of underwriting entities template (S.04.03), in the annual solo (ARS) return.

It applies to 2.8.2 returns too, the release for the 2026 returns, and Line4 Check runs it there as well.

Check your file for this ruleWhat to do if it fails

The rule in plain words

If Type of underwriting entity (C0020) is a head office (LB:x245) then Underwriting entity code (C010) need to be LEI code

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. 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 S.04.03 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

Basic information - list of underwriting entities: list of underwriting entities (S.04.03.01.01)

Column

  • C0020Type of underwriting entity

Which returns it applies to

Line4 Check runs it on annual solo (ARS) return on EIOPA taxonomy 2.10.0. EIOPA applies it to annual solo (ARS) and annual ECB solo (AES) returns, as a blocking check.

EIOPA’s own words and formula

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

Show the formulaShow

EIOPA's formula. Cells are written as {t: table, r: row, c: column}.

if {t: S.04.03.01.01, c: C0020} = [s2c_LB:x245] then matches(dim({t: S.04.03.01.01, c: C0020},[s2c_dim:UE]), "^LEI/[A-Z0-9]{18}[0-9]{2}$") else true()

Every Solvency II rule on S.04.03

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.