1 min readWarningEIOPA taxonomy 2.10.0Updated 11 November 2026

Risk concentration - exposure to counterparties: a conditional check (S.37.01, EIOPA rule BV2585)

A warning on the risk concentration - exposure to counterparties template (S.37.01), in the annual group (ARG) return.

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

NACE relating to Financial and Insurance activities, for which the letter identifying the Section followed by the 4 digits code for the class shall be used

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.37.01 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

Risk concentration - exposure to counterparties: risk concentration - exposure to counteparties (S.37.01.04.01)

Column

  • C0100Sector

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

if matches(LocalName({t: S.37.01.04.01, c: C0100}), "^L.*") then matches(LocalName({t: S.37.01.04.01, c: C0100}), "^L\.\d{2}\.\d{2}$") else true()

Every Solvency II rule on S.37.01

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.