2 min readBlockingEIOPA taxonomy 2.10.0Updated 11 November 2026

Own funds and detailed information by tiers on own funds: two values must match (S.23.01, S.23.02, EIOPA rule BV105)

A blocking check on the own funds (S.23.01) and detailed information by tiers on own funds (S.23.02) templates, in the annual group (ARG) return.

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

The rule in plain words

The item "Total Tier 1" value of "Total initial fund members' contribution or the equivalent basic own - fund item for mutual and mutual type undertakings" reported in the template Detailed information by tiers on own funds (S.23.02) must be equal to the "Tier 1 - unrestricted" value of "Initial funds, members' contributions or the equivalent basic own-fund item or mutual and mutual-type undertakings" reported in the template Own funds (S.23.01)

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 two values must be the same. Find which of the two is right, and correct the other one.
  3. 03EIOPA allows a small rounding difference, worked out from the decimals each value is reported with.
  4. 04It runs only when your filing indicators mark S.23.01 and S.23.02 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

Own funds (S.23.01.04.01)

Row

  • R0040Initial funds, members' contributions or the equivalent basic own - fund item for mutual and mutual-type undertakings

Column

  • C0020Tier 1 - unrestricted

Detailed information by tiers on own funds: basic own funds (S.23.02.04.01)

Row

  • R0200Total initial fund members' contributions or the equivalent basic own fund item for mutual and mutual type undertakings

Column

  • C0020Tier 1

A worked example

With simple numbers.

Illustrative values
Initial funds, members' contributions or the equivalent basic own - fund item for mutual and mutual-type undertakings, Tier 1 - unrestricted1,200
What the rule then expects

Total initial fund members' contributions or the equivalent basic own fund item for mutual and mutual type undertakings, Tier 1 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, reported to the unit, so the rounding tolerance does not change the result.

Which returns it applies to

Line4 Check runs it on annual group (ARG) return on EIOPA taxonomy 2.10.0. EIOPA applies it to annual group (ARG) returns, as a blocking check.

EIOPA’s own words and formula

In EIOPA’s list of validations, word for word:

The item "Total Tier 1" value of "Total initial fund members' contribution or the equivalent basic own - fund item for mutual and mutual type undertakings" reported in the template S.23.02 - Detailed information by tiers on own funds must be equal to the "Tier 1 - unrestricted" value of "Initial funds, members' contributions or the equivalent basic own-fund item or mutual and mutual-type undertakings" reported in the template S.23.01 - Own funds.
Show the formulaShow

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

{t: S.23.02.04.01, r: R0200, c: C0020, z: Z0001} = {t: S.23.01.04.01, r: R0040, c: C0020, z: Z0001}

Every Solvency II rule on S.23.01

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.