1 min readWarningEIOPA taxonomy 2.10.0Updated 11 November 2026

Open derivatives: a cell must be left empty (S.08.01, EIOPA rule BV801)

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 "Maximum loss under unwinding event" in Open Derivatives (S.08.01) should not be reported for derivatives other than credit derivatives (CIC ##F#)

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 (BV801-1 and BV801-2), 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. 02Remove the value from this cell where the rule applies. A 0 is a value too, so leave the cell out of the return altogether.
  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

  • C0190Maximum loss under unwinding event

Open derivatives: information on derivatives (S.08.01.01.02)

Column

  • C0380CIC

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

Column

  • C0190Maximum loss under unwinding event

Open derivatives: information on derivatives (S.08.01.04.02)

Column

  • C0380CIC

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 "Maximum loss under unwinding event" in S.08.01 - Open Derivatives should not be reported for derivatives other than credit derivatives (CIC ##F#).
Show the formulaShow

EIOPA's formula, for BV801-2. Cells are written as {t: table, r: row, c: column}.

isNull({t: S.08.01.01.01, c: C0190, z: Z0001})

BV801-1:

isNull({t: S.08.01.04.01, c: C0190, z: Z0001})

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.