1 min readBlockingBank of England taxonomy 2.2.0Updated 11 November 2026

Cyber underwriting risk: double, tailing or leading whitespaces are not allowed (IR.21.04, Bank of England rule IR_bv1681)

A blocking check on the cyber underwriting risk template (IR.21.04), in the quarterly solo (QRS), quarterly group (QRG), annual solo (ARS), annual group (ARG) and annual third-country branch (ARB) returns.

The rule in plain words

Double, tailing or leading whitespaces are not allowed

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

The cells it reads

Cyber underwriting risk - risk identification (IR.21.04.01.01)

Columns

  • C0010Product Group Code
  • C0040Cyber coverage
  • C0050Line(s) of business
  • C0080Sum(s) insured
  • C0090Premium(s)
  • C0100Sum(s) reinsured
  • C0110Number of Claims settled with Payment
  • C0120Amount of Gross Claims Paid - Total
  • C0121Amount of Gross Claims Paid - First Party
  • C0122Amount of Gross Claims Paid - Third Party
  • C0123Amount of Gross Claims Paid - Costs & Expenses
  • C0130Number of Claims settled without payment
  • C0140Gross undiscounted best estimate provision for claims outstanding - Total
  • C0141Gross undiscounted best estimate provision for claims outstanding - First Party
  • C0142Gross undiscounted best estimate provision for claims outstanding - Third Party
  • C0143Gross undiscounted best estimate provision for claims outstanding - Costs & Expenses

Which returns it applies to

Line4 Check runs it on quarterly solo (QRS), quarterly group (QRG), annual solo (ARS), annual group (ARG) and annual third-country branch (ARB) returns on Bank of England taxonomy 2.2.0. The Bank of England applies it to quarterly solo (QRS), annual third-country branch (ARB), annual solo (ARS), quarterly group (QRG) and annual group (ARG) returns, as a blocking check.

The Bank’s own words and formula

The plain words above are the Bank of England’s own, word for word, from its list of validations.

Show the formulaShow

The Bank of England's formula. Cells are written as {t: table, r: row, c: column}.

not(matches(dim($v0,$[boec_dim:NJ]), "((^ )|( )|( $))+"))

Every Solvency UK rule on IR.21.04

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.