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

Every value in the cells it covers in PRA110. HQLA and usable liquidity. Initial Stock. Total must be zero or more (CL66.01.01.02, Bank of England check boe_b2004_s)

A warning on the PRA110. Initial stock. Total template (CL66.01.01.02), in the liquidity pillar II (PRA110) return.

Line4 Check runs it on the liquidity pillar II (PRA110) return, proven on test files, check by check: the same outcome on all three test files of that return.

Check your file for this ruleWhat to do if it fails

The rule in plain words

In PRA110. Initial stock. Total (CL66.01.01.02): every value in the cells it covers in PRA110. HQLA and usable liquidity. Initial Stock. Total (CL66.01.01.06) 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 CL66.01.01 as reported.
  4. 04This is a warning. It does not stop the return on its own, but your supervisor may ask you to explain it.

The cells it reads

PRA110. Initial stock. Total (CL66.01.01.02)

Rows

  • R750Level 1 tradable assets
  • R820Level 2A tradable assets
  • R860Level 2B tradable assets

Column

  • C010Initial stock

Which returns it applies to

Line4 Check runs it on the liquidity pillar II (PRA110) return on Bank of England banking taxonomy 4.1.1. The Bank of England applies it to liquidity pillar II (PRA110) returns, as a warning.

The Bank’s own words and formula

The plain words above spell out the Bank’s formula, with each cell named from its templates. In the Bank of England’s list of validations, word for word:

[boe_b2004_s]; [CL66.01.01.06 ]; [scope({t:CL66.01.01.06,y:7390;7400;7410,x:010})]; [{t:CL66.01.01.06} >= 0]
Show the formulaShow

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

{t: CL66.01.01.06} >= 0

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

scope({t: CL66.01.01.06, r: 7390; 7400; 7410, c: 010, seq: False, f: banking, fv: liquidity_pillarii})

Every PRA banking rule on CL66.01.01.02

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.