1 min readBlockingEIOPA taxonomy 2.10.0Updated 11 November 2026

Own funds: two values must match (S.23.01, EIOPA rule BV528)

A blocking check on the own funds template (S.23.01), in the quarterly solo (QRS) and annual solo (ARS) returns.

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 "Total" value of the item reported in column "Total" reported in Own funds (S.23.01) must be equal to the value reported as "Tier 1 - unrestricted"

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.

EIOPA writes it out as separate checks, one for each table or return it covers. Line4 Check runs two of them (BV528-1 and BV528-2), and a failure names the one that failed.

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 S.23.01 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

Own funds (S.23.01.01.01)

Rows

  • R0070Surplus funds
  • R0130Reconciliation reserve

Columns

  • C0010Total
  • C0020Tier 1 - unrestricted

Own funds: reconciliation reserve (S.23.01.01.02)

Row

  • R0760Reconciliation reserve

Column

  • C0060Value

Own funds (S.23.01.02.01)

Rows

  • R0070Surplus funds
  • R0130Reconciliation reserve

Columns

  • C0010Total
  • C0020Tier 1 - unrestricted

Own funds: reconciliation reserve (S.23.01.02.02)

Row

  • R0760Reconciliation reserve

Column

  • C0060Value

Which returns it applies to

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

EIOPA’s own words and formula

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

The "Total" value of the item reported in column "Total" reported in S.23.01 - Own funds must be equal to the value reported as "Tier 1 - unrestricted".
Show the formulaShow

EIOPA's formula, for BV528-2. Cells are written as {t: table, r: row, c: column}.

{t: S.23.01.02.01, c: C0010, z: Z0001} = {t: S.23.01.02.01, c: C0020, z: Z0001}

BV528-1:

{t: S.23.01.01.01, c: C0010, z: Z0001} = {t: S.23.01.01.01, 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.