1 min readWarningEIOPA taxonomy 2.10.0Updated 11 November 2026

The item "Contract size" in Open Derivatives should be positive (S.08.01, EIOPA rule BV1026)

A warning on the open derivatives template (S.08.01), in the quarterly solo (QRS), quarterly group (QRG) and quarterly branch (QRB) 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 "Contract size" in Open Derivatives (S.08.01) should be positive

EIOPA writes it out as separate checks, one for each table or return it covers. Line4 Check runs two of them (BV1026-1 and BV1026-2), 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. 02Look for a value of zero or below in these cells.
  3. 03It runs only when your filing indicators mark S.08.01 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

Open derivatives: information on positions held (S.08.01.01.01)

Column

  • C0180Contract size

Open derivatives: information on positions held (S.08.01.04.01)

Column

  • C0180Contract size

Which returns it applies to

Line4 Check runs it on quarterly solo (QRS), quarterly group (QRG) and quarterly branch (QRB) returns on EIOPA taxonomy 2.10.0. EIOPA applies it to quarterly group (QRG), annual group (ARG), annual ECB solo (AES), quarterly ECB solo (QES), quarterly ECB branch (QEB), annual ECB branch (AEB), quarterly solo (QRS), quarterly branch (QRB), annual solo (ARS) and annual branch (ARB) returns, as a warning.

EIOPA’s own words and formula

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

The item "Contract size" in S.08.01 - Open Derivatives should be positive.
Show the formulaShow

EIOPA's formula, for BV1026-2. Cells are written as {t: table, r: row, c: column}.

{t: S.08.01.01.01, c: C0180, z: Z0001} > 0

BV1026-1:

{t: S.08.01.04.01, c: C0180, z: Z0001} > 0

Every Solvency II rule on S.08.01

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.