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2 min readWarningEIOPA taxonomy 2.10.0Updated 11 November 2026

Internal model - non-life and health NSLT underwriting risk: a total must equal the sum of its parts (S.26.13, EIOPA rule BV1852)

A warning on the internal model - non-life and health NSLT underwriting risk template (S.26.13), 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.

Check your file for this ruleWhat to do if it fails

The rule in plain words

The item "Diversified" reported in S.26.13.01.09 Overall Non-life and Health NSLT underwriting risk should be equal to the sum of "Total undiversified" and "Diversification" for the relevant line items

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. 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  3. 03If they differ, a part is missing, a value sits in the wrong cell, or the total is out of date.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.26.13 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 - non-life and health NSLT underwriting risk: non-life and health NSLT underwriting risk - reserve risk model data - aggregate (S.26.13.01.03)

Rows

  • R0090Solvency Capital Requirement
  • R0360Solvency Capital Requirement

Column

  • C0070Diversified reserve risk excluding explicit Catastrophe Risk

Internal model - non-life and health NSLT underwriting risk: non-life and health NSLT underwriting risk - reserve risk model data - SII loB (S.26.13.01.04)

Rows

  • R0090Solvency Capital Requirement
  • R0360Solvency Capital Requirement

Column

  • C0080SII Line of Business

Internal model - non-life and health NSLT underwriting risk: non-life and health NSLT underwriting risk - premium risk model data - aggregate (S.26.13.01.06)

Rows

  • R0660Solvency Capital Requirement
  • R06900,001
  • R07000,005
  • R07100,01
  • R07200,05
  • R07300,1
  • R07400,2
  • R07500,25
  • R07600,3
  • R07700,4
  • R07800,5
  • R07900,6
  • R08000,7
  • R08100,75
  • R08200,8
  • R08300,9
  • R08400,975
  • R08500,98
  • R08600,985
  • R08700,99
  • R08800,995
  • R08900,997
  • R09000,999
  • R0960Solvency Capital Requirement
  • R09900,001
  • R10000,005
  • R10100,01
  • R10200,05
  • R10300,1
  • R10400,2
  • R10500,25
  • R10600,3
  • R10700,4
  • R10800,5
  • R10900,6
  • R11000,7
  • R11100,75
  • R11200,8
  • R11300,9
  • R11400,975

And 6 more.

Column

  • C0100Diversified premium risk excluding explicit Catastrophe Risk

Internal model - non-life and health NSLT underwriting risk: non-life and health NSLT underwriting risk - premium risk model data - SII loB (S.26.13.01.07)

Rows

  • R0660Solvency Capital Requirement
  • R06900,001
  • R07000,005
  • R07100,01
  • R07200,05
  • R07300,1
  • R07400,2
  • R07500,25
  • R07600,3
  • R07700,4
  • R07800,5
  • R07900,6
  • R08000,7
  • R08100,75
  • R08200,8
  • R08300,9
  • R08400,975
  • R08500,98
  • R08600,985
  • R08700,99
  • R08800,995
  • R08900,997
  • R09000,999
  • R0960Solvency Capital Requirement
  • R09900,001
  • R10000,005
  • R10100,01
  • R10200,05
  • R10300,1
  • R10400,2
  • R10500,25
  • R10600,3
  • R10700,4
  • R10800,5
  • R10900,6
  • R11000,7
  • R11100,75
  • R11200,8
  • R11300,9
  • R11400,975

And 6 more.

Column

  • C0110SII Line of Business

Internal model - non-life and health NSLT underwriting risk: overall non-life and health NSLT underwriting risk (S.26.13.01.09)

Rows

  • R1210Solvency Capital Requirement
  • R12400,001
  • R12500,005
  • R12600,01
  • R12700,05
  • R12800,1
  • R12900,2
  • R13000,25
  • R13100,3
  • R13200,4
  • R13300,5
  • R13400,6
  • R13500,7
  • R13600,75
  • R13700,8
  • R13800,9
  • R13900,975
  • R14000,98
  • R14100,985
  • R14200,99
  • R14300,995
  • R14400,997
  • R14500,999
  • R1460Solvency Capital Requirement
  • R14900,001
  • R15000,005
  • R15100,01
  • R15200,05
  • R15300,1
  • R15400,2
  • R15500,25
  • R15600,3
  • R15700,4
  • R15800,5
  • R15900,6
  • R16000,7
  • R16100,75
  • R16200,8
  • R16300,9
  • R16400,975

And 6 more.

Columns

  • C0130Total undiversified
  • C0140Diversification
  • C0150Diversified

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}.

sum({t: S.26.13.01.09, c: C0150, z: Z0001}) = sum({t: S.26.13.01.09, c: C0130, z: Z0001}) + sum({t: S.26.13.01.09, c: C0140, z: Z0001})

Every Solvency II rule on S.26.13

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.