Line4

1 min readBlockingBank of England banking taxonomy 4.1.1Updated 11 November 2026

MREL Debt: monetary values shall be greater than or equal to zero (BR01.00.01.01, Bank of England check boe_b4100)

A blocking check on the MREL Debt template (BR01.00.01.01), in the MREL debt (MRL003) return.

Line4 Check runs it on the MREL debt (MRL003) return, proven on test files, check by check: the same outcome on all eight test files of that return.

Check your file for this ruleWhat to do if it fails

The rule in plain words

Monetary values shall be greater than or equal to zero

In MREL Debt (BR01.00.01.01): every value in 6 columns (listed below) must be zero or more.

What to do if your return fails it

  1. 01Open the table below and find the cells the rule reads.
  2. 02Look for a value below zero in these cells, such as an amount entered as a negative number.
  3. 03It runs only when your filing indicators mark BR01.00.01 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

MREL Debt (BR01.00.01.01)

Columns

  • C080For internal issuances only: Amount of instrument held by the entity concerned
  • C160Original value, currency of issuance
  • C165Outstanding nominal value, currency of issuance
  • C170Outstanding nominal value, reporting currency
  • C180Accounting value
  • C250Regulatory value

Which returns it applies to

Line4 Check runs it on the MREL debt (MRL003) return on Bank of England banking taxonomy 4.1.1. The Bank of England applies it to MREL debt (MRL003) returns, as a blocking check.

The Bank’s own words and formula

The first paragraph of the plain words above is the Bank of England’s own, word for word, from its list of validations. The second spells out its formula, with each cell named from its templates.

Show the formulaShow

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

{t: BR01.00.01.01, c: 080; 160; 165; 170; 180; 250} >=0

Every PRA banking rule on BR01.00.01.01

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.