1 min readWarningEIOPA taxonomy 2.10.0Updated 11 November 2026

Solvency capital requirement - non-life and health catastrophe risk: diversification should be disclosed as a negative factor (S.27.01, SR.27.01, EIOPA rule BV2542)

A warning on the solvency capital requirement - non-life and health catastrophe risk (S.27.01) and solvency capital requirement - non-life and health catastrophe risk (SR.27.01) templates, in the annual solo (ARS), annual group (ARG) and annual branch (ARB) returns.

It is new in taxonomy 2.10.0, for returns from the first quarter of 2027. 2.8.2 returns do not have it.

The rule in plain words

Diversification should be disclosed as a negative factor

EIOPA writes it out as separate checks, one for each table or return it covers. Line4 Check runs three of them (BV2542-1 to BV2542-3), 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. 02Compare the values in your return. If the first is bigger than it may be, one of them is wrong: check both before you change either.
  3. 03It runs only when your filing indicators mark S.27.01 as reported.
  4. 04This is a warning. It does not stop the return on its own, but your supervisor may ask you to explain it.

The cells it reads

Solvency capital requirement - non-life and health catastrophe risk: natural catastrophe risk - flood (SR.27.01.01.04)

Row

  • R1610Diversification effect between regions

Columns

  • C0260Catastrophe Risk Charge before risk mitigation
  • C0290Catastrophe Risk Charge after risk mitigation

Solvency capital requirement - non-life and health catastrophe risk: natural catastrophe risk - flood (S.27.01.01.04)

Row

  • R1610Diversification effect between regions

Columns

  • C0260Catastrophe Risk Charge before risk mitigation
  • C0290Catastrophe Risk Charge after risk mitigation

Solvency capital requirement - non-life and health catastrophe risk: natural catastrophe risk - flood (S.27.01.04.04)

Row

  • R1610Diversification effect between regions

Columns

  • C0260Catastrophe Risk Charge before risk mitigation
  • C0290Catastrophe Risk Charge after risk mitigation

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 ECB solo (AES), annual ECB branch (AEB), annual solo (ARS), annual branch (ARB) and annual group (ARG) returns, as a warning.

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 BV2542-1. Cells are written as {t: table, r: row, c: column}.

{t: S.27.01.01.04, r: R1610, z: Z0001} <= 0

BV2542-2:

{t: S.27.01.04.04, r: R1610, z: Z0001} <= 0

BV2542-3:

{t: SR.27.01.01.04, r: R1610, z: Z0001} <= 0

Every Solvency II rule on S.27.01

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.