1 min readWarningEIOPA taxonomy 2.10.0Updated 11 November 2026

Internal model - credit event risk portfolio view details: a total must equal the sum of its parts (S.26.10, EIOPA rule BV1839)

A warning on the internal model - credit event risk portfolio view details template (S.26.10), in the annual solo (ARS), annual group (ARG) and annual branch (ARB) 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 "Market value", "Exposure at Default" and "Credit Risk Contribution" value of "Sum of all exposures" reported in S.26.10.01.03 Internal model - Credit event risk Portfolio view details - Market value (group) should be equal to the sum of "Top exposures total" and "All other exposures"

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. 02Add up the parts in your return and compare the result with the total.
  3. 03If they differ, a part is missing, a value sits in the wrong cell, or the total is out of date.
  4. 04EIOPA allows a small rounding difference, worked out from the decimals each value is reported with.
  5. 05It runs only when your filing indicators mark S.26.10 as reported.
  6. 06This 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

Internal model - credit event risk portfolio view details - market value (group) (S.26.10.01.03)

Rows

  • R0270Sum of all exposures
  • R0280Top exposures total
  • R0390All other exposures

Columns

  • C0020Market value
  • C0030Exposure at Default
  • C0040Credit Risk Contribution

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 group (ARG), annual ECB branch (AEB), annual solo (ARS) and annual branch (ARB) 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}.

{t: S.26.10.01.03, r: R0270, z: Z0001} = sum({t: S.26.10.01.03, r: R0280; R0390, z: Z0001})

Every Solvency II rule on S.26.10

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.