2 min readBlockingEIOPA taxonomy 2.10.0Updated 11 November 2026

Solvency capital requirement - health underwriting risk: a total must equal the sum of its parts (S.26.04, EIOPA rule BV259_1)

A blocking check on the solvency capital requirement - health underwriting risk template (S.26.04), in the annual solo (ARS), annual group (ARG) and annual branch (ARB) 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 item "Total Volume measure" reported in S.26.04 -Solvency Capital Requirement - Health underwriting risk for NSLT health premium and reserve risk must be equal to the sum of the volume measures for "Medical expenses insurance and proportional reinsurance", "Income protection insurance and proportional reinsurance", "Worker's compensation insurance and proportional reinsurance" and "Non-proportional health reinsurance"

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 (BV259_1-1 and BV259_1-2), 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. 02Add up the parts in your return and compare the result with the total.
  3. 03If they differ, a part is missing, a value sits in the wrong cell, or the total is out of date.
  4. 04EIOPA allows a small rounding difference, worked out from the decimals each value is reported with.
  5. 05It runs only when your filing indicators mark S.26.04 as reported.
  6. 06This is a blocking check. A return that fails it is normally rejected, so fix it before you submit.

The cells it reads

Solvency capital requirement - health underwriting risk: nSLT health premium and reserve risk (S.26.04.01.03)

Rows

  • R1000Medical expenses insurance and proportional reinsurance
  • R1010Income protection insurance and proportional reinsurance
  • R1020Worker's compensation insurance and proportional reinsurance
  • R1030Non-proportional health reinsurance
  • R1040Total Volume measure

Column

  • C0170V

Solvency capital requirement - health underwriting risk: nSLT health premium and reserve risk (S.26.04.04.03)

Rows

  • R1000Medical expenses insurance and proportional reinsurance
  • R1010Income protection insurance and proportional reinsurance
  • R1020Worker's compensation insurance and proportional reinsurance
  • R1030Non-proportional health reinsurance
  • R1040Total Volume measure

Column

  • C0170V

Which returns it applies to

Line4 Check runs it on annual solo (ARS), annual group (ARG) and annual branch (ARB) returns on EIOPA taxonomy 2.10.0. EIOPA applies it to annual branch (ARB), annual solo (ARS), annual ECB solo (AES), annual ECB branch (AEB) and annual group (ARG) 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, for BV259_1-1. Cells are written as {t: table, r: row, c: column}.

{t: S.26.04.01.03, r: R1040, z: Z0001} = sum({t: S.26.04.01.03, r: R1000; R1010; R1020; R1030, z: Z0001})

BV259_1-2:

{t: S.26.04.04.03, r: R1040, z: Z0001} = sum({t: S.26.04.04.03, r: R1000; R1010; R1020; R1030, z: Z0001})

Every Solvency II rule on S.26.04

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.