1 min readBlockingBank of England taxonomy 2.2.0Updated 11 November 2026

Open derivatives: the format of a code or text (IR.08.01, Bank of England rule IR_bv0574_01)

A blocking check on the open derivatives template (IR.08.01), in the quarterly solo (QRS) and annual solo (ARS) returns.

The rule in plain words

The item "Swap delivered currency" in Open Derivatives (IR.08.01.01.02) is only applicable to currency Swaps and to interest rate and currency Swaps (CIC = ##D2, ##D3)

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. 02Compare the code or text in your return with the format the rule sets out, character by character, including any prefix and any spaces.
  3. 03It runs only when your filing indicators mark IR.08.01 as reported.
  4. 04This 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 derivatives (IR.08.01.01.02)

Columns

  • C0380CIC
  • C0410Swap delivered currency

Which returns it applies to

Line4 Check runs it on quarterly solo (QRS) and annual solo (ARS) returns on Bank of England taxonomy 2.2.0. The Bank of England applies it to quarterly solo (QRS) and annual solo (ARS) returns, as a blocking check.

The Bank’s own words and formula

In the Bank of England’s list of validations, word for word:

The item "Swap delivered currency" in IR.08.01.01.02 - Open Derivatives is only applicable to currency Swaps and to interest rate and currency Swaps (CIC = ##D2, ##D3).
Show the formulaShow

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

if not(matches({t: IR.08.01.01.02, c: C0380, z: Z0001}, "^..((D2)|(D3))$")) then isNull({t: IR.08.01.01.02, c: C0410, z: Z0001}) else true()

Every Solvency UK rule on IR.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.