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

MREL Resources - accounting value: a value must not be more than another (MR02.01.01.02, Bank of England check boe_b4005_2)

A blocking check on the MREL Resources - accounting value template (MR02.01.01.02), in the MREL resources (MRL001) return.

Line4 Check runs it on the MREL resources (MRL001) 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

Holdings without significant investment 'of which held in the trading book for more than 30 days' shall not exceed the total holdings (row 120)

In each of 7 columns (listed below) of MREL Resources - accounting value (MR02.01.01.02): "Of which held in the trading book for no longer than 30 business days, without significant investment" (row 130) must not be more than "Institution’s holdings of MREL eligible liabilities instruments of G-SIB entities without significant investment in those entities" (row 120).

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 values in your return. If the first is bigger than it may be, one of them is wrong: check both before you change either.
  3. 03The Bank of England allows a small rounding difference, worked out from the decimals each value is reported with.
  4. 04It runs only when your filing indicators mark MR02.01.01 as reported.
  5. 05This is a blocking check. A return that fails it is normally rejected, so fix it before you submit.

The cells it reads

MREL Resources - accounting value (MR02.01.01.02)

Rows

  • R120Institution’s holdings of MREL eligible liabilities instruments of G-SIB entities without significant investment in those entities
  • R130Of which held in the trading book for no longer than 30 business days, without significant investment

Columns

  • C080Less than one year (accounting value)
  • C090One year and greater, less than two years (accounting value)
  • C100Two years and greater, less than five years (accounting value)
  • C110Five years and greater (accounting value)
  • C120Perpetual (accounting value)
  • C130Calculated amount that does not have maturity (accounting value)
  • C140Current reporting aggregate (accounting value)

Which returns it applies to

Line4 Check runs it on the MREL resources (MRL001) return on Bank of England banking taxonomy 4.1.1. The Bank of England applies it to MREL resources (MRL001) 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: MR02.01.01.02, r: 130} <= {t: MR02.01.01.02, r: 120}

Where it applies, in the Bank's words (its scope):

scope({t: MR02.01.01.02, c:080;090;100;110;120;130;140, f: banking, fv: mrel})

Every PRA banking rule on MR02.01.01.02

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.