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

General information (MRL001): please provide either a FRN or LEI code. The other data fields cannot be blank (MR700.00.01.01, Bank of England check boe_b4002)

A blocking check on the general information (MRL001) template (MR700.00.01.01), 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 rule

The rule in plain words

Please provide either a FRN or LEI code. The other data fields cannot be blank

In column "Values" (010) of General information (MRL001) (MR700.00.01.01): either "Firm Reference Number" (row 020) is reported, or "LEI" (row 030) is reported, and exactly 9 values must be reported in 9 rows (listed below).

This is a blocking check. A return that fails it is normally rejected, so fix it before you submit. It runs only when your filing indicators mark MR700.00.01 as reported.

The cells it reads

General information (MRL001) (MR700.00.01.01)

Rows

  • R010Entity name
  • R020Firm Reference Number
  • R030LEI
  • R040Reporting Basis
  • R050Reporting Period Start Date
  • R060Reporting Period End Date
  • R080Reporting Currency
  • R091Name
  • R092Position
  • R093Email
  • R100Basis of preparation

Column

  • C010Values

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}.

(not(isNull({t: MR700.00.01.01, r: 020, c: 010})) or not(isNull({t: MR700.00.01.01, r: 030, c: 010}))) and count({t: MR700.00.01.01, r: 010; 040; 050; 060; 080; 091; 092; 093; 100, c: 010}) = 9

Every PRA banking rule on MR700.00.01.01

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.