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

'Cash prime brokerage' amount for 'Gross market value (period end)' must be higher than or equal to zero (LV52.00.00.01, Bank of England check boe_b0061)

A blocking check on the (LR9) Treatment of internalised trades template (LV52.00.00.01), in the contingent leverage (LVR002) return.

Line4 Check runs it on the contingent leverage (LVR002) return, proven on test files, check by check: the same outcome on all eight test files of that return.

The rule in plain words

'Cash prime brokerage' amount for 'Gross market value (period end)' must be higher than or equal to zero

In (LR9) Treatment of internalised trades (LV52.00.00.01): "Cash prime brokerage" in column "Gross market value (period end)" (row 0010, column 0010) must not be negative.

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 LV52.00.00 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

(LR9) Treatment of internalised trades (LV52.00.00.01)

Row

  • R0010Cash prime brokerage

Column

  • C0010Gross market value (period end)

Which returns it applies to

Line4 Check runs it on the contingent leverage (LVR002) return on Bank of England banking taxonomy 4.1.1. The Bank of England applies it to contingent leverage (LVR002) 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: LV52.00.00.01, r: 0010, c: 0010}>=0

Every PRA banking rule on LV52.00.00.01

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.