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2 min readBlockingEIOPA taxonomy 2.10.0Updated 11 November 2026

Open derivatives: a conditional check (S.08.01, EIOPA rule BV1418)

A blocking check on the open derivatives template (S.08.01), in the quarterly solo (QRS), quarterly group (QRG), quarterly branch (QRB), annual solo (ARS), annual group (ARG), annual branch (ARB), financial stability solo (QFS), financial stability group (QFG) and financial stability branch (QFB) returns.

It applies to 2.8.2 returns too, the release for the 2026 returns, and Line4 Check runs it there as well.

Check your file for this ruleWhat to do if it fails

The rule in plain words

"Instrument underlying the derivative (code and type of code)" (S.08.01.01.01 C0090) does not follow "^CUSIP/[A-HJ-NP-Z0-9*@#]{8}\d$" or "^SEDOL/[BCDF-HJ-NP-TV-Z0-9]{6}\d$" or "^WKN/[A-Z0-9]{6}$" or "^BT/.+" or "^BBGID/BBG[BCDF-HJ-NP-TV-Z0-9]{8}\d$" or "^RIC/.+" or "^FIGI/[BCDF-HJ-NP-TV-Z]{2}G[BCDF-HJ-NP-TV-Z0-9]{8}\d$" or "^OCANNA/.+" pattern

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 tables 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. 03This is a blocking check. A return that fails it is normally rejected, so fix it before you submit.

The cells it reads

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

Columns

  • C0041Unique Transactions Identifier
  • C0060Portfolio
  • C0080Derivatives held in index-linked and unit-linked contracts
  • C0110Use of derivative
  • C0131Notional amount of the derivative
  • C0140Buyer / Seller
  • C0150Premium paid to date
  • C0160Premium received to date
  • C0170Number of contracts
  • C0180Contract size
  • C0190Maximum loss under unwinding event
  • C0200Swap outflow amount
  • C0210Swap inflow amount
  • C0220Initial date
  • C0230Duration
  • C0240Solvency II value
  • C0250Valuation method

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

Columns

  • C0010Legal name of the undertaking
  • C0041Unique Transactions Identifier
  • C0060Portfolio
  • C0080Derivatives held in index-linked and unit-linked contracts
  • C0110Use of derivative
  • C0131Notional amount of the derivative
  • C0140Buyer / Seller
  • C0150Premium paid to date
  • C0160Premium received to date
  • C0170Number of contracts
  • C0180Contract size
  • C0190Maximum loss under unwinding event
  • C0200Swap outflow amount
  • C0210Swap inflow amount
  • C0220Initial date
  • C0230Duration
  • C0240Solvency II value
  • C0250Valuation method

Which returns it applies to

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

EIOPA’s own words and formula

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

Reported dim:IW doesn't follow "^CUSIP/[A-HJ-NP-Z0-9*@#]{{8}}\d$" or "^SEDOL/[BCDF-HJ-NP-TV-Z0-9]{{6}}\d$" or "^WKN/[A-Z0-9]{{6}}$" or "^BT/.+" or "^BBGID/BBG[BCDF-HJ-NP-TV-Z0-9]{{8}}\d$" or "^RIC/.+" or "^FIGI/[BCDF-HJ-NP-TV-Z]{{2}}G[BCDF-HJ-NP-TV-Z0-9]{{8}}\d$" or "^OCANNA/.+" pattern.
Show the formulaShow

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

if not(matches(dim({d: [s2c_dim:IW]},[s2c_dim:IW]), "^ISIN/.*")) and not(matches(dim({d: [s2c_dim:IW]},[s2c_dim:IW]), "^CAU/.*")) then matches(dim({d: [s2c_dim:IW]},[s2c_dim:IW]), "^(CUSIP/[A-HJ-NP-Z0-9*@#]{8}\d$)|(SEDOL/[BCDF-HJ-NP-TV-Z0-9]{6}\d$)|(WKN/[A-Z0-9]{6}$)|(BT/.+)|(BBGID/BBG[BCDF-HJ-NP-TV-Z0-9]{8}\d$)|(RIC/.+)|(FIGI/[BCDF-HJ-NP-TV-Z]{2}G[BCDF-HJ-NP-TV-Z0-9]{8}\d$)|(OCANNA/.+)") or isNull(dim({d: [s2c_dim:IW]},[s2c_dim:IW])) else true()

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.