1 min readBlockingEIOPA taxonomy 2.10.0Updated 11 November 2026

"Underwriting entity code" (S.04.03.01.01 C0010) does not follow "^LEI/[A-Z0-9]{20}$" or "^SC/.*$" pattern (S.04.03, S.04.04, S.04.05, EIOPA rule BV2071)

A blocking check on the basic information - list of underwriting entities (S.04.03), activity by country- location of underwriting (S.04.04) and activity by country - location of risk (S.04.05) templates, in the annual solo (ARS) return.

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

"Underwriting entity code" (S.04.03.01.01 C0010) does not follow "^LEI/[A-Z0-9]{20}$" or "^SC/.*$" pattern

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

Basic information - list of underwriting entities: list of underwriting entities (S.04.03.01.01)

Columns

  • C0020Type of underwriting entity
  • C0030Type of branch localisation
  • C0040Country of establishment

Activity by country- location of underwriting: by underwriting entity (S.04.04.01.01)

Rows

  • R0020Premiums written (gross)
  • R0030Claims incurred (gross)
  • R0040Acquisition expenses (gross)
  • R0050of which: commissions (gross)

Columns

  • C0010Business underwritten in the country of establishment
  • C0020Business underwritten through FPS in country different from the country of establishment

Activity by country- location of underwriting: by underwriting entity and by EEA country (host country for FPS) (S.04.04.01.02)

Rows

  • R0020Premiums written (gross)
  • R0030Claims incurred (gross)
  • R0040Acquisition expenses (gross)
  • R0050of which: commissions (gross)

Column

  • C0030Business underwritten in the considered country through FPS

Activity by country - location of risk: total underwriting entity activity (S.04.05.01.01)

Rows

  • R0020Premiums written (gross)
  • R0030Premiums earned (gross)
  • R0040Claims incurred (gross)
  • R0050Expenses incurred (gross)

Column

  • C0010Total of business written by the underwriting entity

Activity by country - location of risk (S.04.05.01.02)

Rows

  • R0020Premiums written (gross)
  • R0030Premiums earned (gross)
  • R0040Claims incurred (gross)
  • R0050Expenses incurred (gross)

Column

  • C0020Total by country

Which returns it applies to

Line4 Check runs it on annual solo (ARS) return on EIOPA taxonomy 2.10.0. EIOPA applies it to annual solo (ARS) and annual ECB solo (AES) returns, as a blocking check.

EIOPA’s own words and formula

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

dim:UE doesn't follow "^LEI/[A-Z0-9]{{20}}$" or "^SC/.*$" pattern.
Show the formulaShow

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

if matches(dim({d: [s2c_dim:UE]},[s2c_dim:UE]), "^LEI/[A-Z0-9]{18}[0-9]{2}$") and not(matches(dim({d: [s2c_dim:UE]},[s2c_dim:UE]), "^LEI/[A-Z0-9]{18}(01|00)$")) then leiChecksum(substring(dim({d: [s2c_dim:UE]},[s2c_dim:UE]), 5)) else matches(dim({d: [s2c_dim:UE]},[s2c_dim:UE]), "^SC/.*$") or matches(dim({d: [s2c_dim:UE]},[s2c_dim:UE]), "^LEI/(029200720E3M3A4D6D01|029200758D5M0AI3F601|315700X8JQ3IU0NGK501|3157007SCCESQAUH5Z01|315700TCC9NTEP7J8Z01|13250000000000000301|315700ADOXDR5PCY5400|315700A0UB9Q7DOQIZ00|315700BM9Z39TNTGQW00|315700BZ5F7DRYG2UM00|315700B8401GTFFY6X01|315700DJ07P6OX10FK01|315700DKCD4QSKLAMO01|315700D23JL5C1DZNT00|315700EIYO2TLSEGQ700|315700ET7M7VQ4C84R00|315700EZSEA51937KX01|315700GXBGM8DBYKHF01|315700GZA843JXKTJ400|315700G5G24XYL1TXH00|315700HS7WJ1B0SUWM01|315700HXOEOK58E58P01|315700HZU4SMI8LZTU00|315700I3W2AFHP8MNQ01|315700JICZ3SY5SAXX00|315700JKZH6I0067ND01|315700JO5E28SRE00Q01|315700JXUHL9H2C3P700|315700LDDN3RM7Y2MP00|315700LWYOZNQ7V1T100|315700MBYPT6PGKO7M01|315700MW2F0KFR45QW01|315700M5843O6DU83901|315700NNMGS8F3P2CN00|315700N0VEIBHP0NPQ01|315700OASRCM664PAW01|315700OFW4YCOBNX4U01|315700OVW93X0T3HP200|315700O666JVNCQU9X00|315700PLI0I7W8IOV400|315700PN3J57ZUNF1V00|315700PXKOSX7WQV4N00|315700P4N9VSLK5QZV01|315700P40OV6BT045900|315700P6TZOLP92KN801|315700P89WR82VNB8Z00|315700QGM4XWZE1I5N01|315700Q1S8O1UORF9700|315700RK8M4FAHMYAP01|315700RTEHY362KXWJ00|315700SNUXK41WMW5J00|315700S22RGYRIEEOT00|315700S3TF79ALV82F01|315700TF5Z7T28HZJK01|315700TWGZ89LLSRS000|315700TXNX10N8XH4K00|315700T2EEQAPBO0C301|315700T6T49EDM16YO01|315700UJ6N4LGKLNPB00|315700UKZXWXEO126601|315700UYFD5GF9R13F01|315700VG7PTE9EJJRX01|315700VITYR7AL4M9S01|315700VMAJZ9JZTXNQ00|315700WH3YMKHCVYW201|315700WKCDF4QGRRO200|315700WR4IHOO1M5LP00|315700WYOZ6994UATN00|315700WZPEIS41QDKE00|315700XEFYMA5EZ0P500|315700XE21UYOA3GAC01|315700XI4Z8GF5BDUJ01|315700XSCP1S8WOD8E01|315700X40GNCOUWJYR00|315700YS6RQ5TF3VBP01|315700Y1W7W1JHAUBW00|315700Y5JNQMMUF5ID01|3157000VAJWZ3P8ZED00|3157001KM8GOU7PXZY01|3157001K2LAL04D87901|3157001MLDD3SDFQA901|3157001TPR6K4GBTLN00|31570010000000006400|31570010000000009601|31570010000000019301|31570010000000025800|31570010000000029001|31570010000000035500|31570010000000038701|31570010000000045200|31570010000000048401|31570010000000054900|31570010000000064600|31570010000000067801|31570010000000077501|31570010000000084000|31570010000000087201|31570010000000096901|31570010000000103400|31570010000000106601|31570010000000116301|31570010000000122800|31570010000000126001|3157002CKDQOCIHE5H01|31570020000000005900|31570029808HJVCNFA01|3157003FQSSGS9OZ9E01|3157004PTVTDOKB46401|3157004R6CH6C1P4KX00|3157005RUI28M8FANK00|3157005VJE7A3MBUS201|3157005WT1SENAE17R00|31570058O0Z320C4GZ00|3157006B6JVZ5DFMSN00|3157006DE3SPNIUY9K01|3157006FR3JBBOLOMX01|3157006I3B6RSTPQLI00|3157006KT1EZ15OIXW00|315700659AALVVLVIO01|31570067WSCDST0S3F01|3157008VKYORMUNC5O01|3157008ZY7CW6LVU5J00|3157009FTHFDDK7FHW01|3157009OVCV07O4HXM00|315700T8U7IU4W8J3A01|315700BBRQHDWX6SHZ00|3157008KD17KROO7UT01)$")

Every Solvency II rule on S.04.03

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.