The rule in plain words
In column "Amount" (0010) of Capital adequacy - memorandum items (CA4) (C04.00.01.01): "IRB excess (+) or shortfall (-) of specific credit risk adjustments to expected losses for defaulted exposures" (row 0145) must equal "Specific credit risk adjustments and positions treated similarly" (row 0150) minus "Total expected losses eligible" (row 0155).
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.
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 C04.00.01 as reported.
The cells it reads
Capital adequacy - memorandum items (CA4) (C04.00.01.01)
Rows
- R0145IRB excess (+) or shortfall (-) of specific credit risk adjustments to expected losses for defaulted exposures
- R0150Specific credit risk adjustments and positions treated similarly
- R0155Total expected losses eligible
Column
- C0010Amount
Which returns it applies to
Line4 Check runs it on the own funds (PRA001) return on Bank of England banking taxonomy 4.1.1. The Bank of England applies it to own funds (PRA001) returns, as a blocking check.
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:
v0251_m: [C04.00.01.01] {r0145, c0010} = {r0150, c0010} - {r0155, c0010}
Show the formulaShowHide
The Bank of England's formula. Cells are written as {t: table, r: row, c: column}.
{t: C04.00.01.01, r: 0145, c: 0010} = {t: C04.00.01.01, r: 0150, c: 0010} - {t: C04.00.01.01, r: 0155, c: 0010}Other rules on Capital adequacy - memorandum items (CA4) (C04.00.01.01)
- Capital adequacy - memorandum items (CA4): a total must equal the sum of its parts (v0250_m)Blocking
- Capital adequacy - memorandum items (CA4): a total must equal the sum of its parts (v0249_m)Blocking
- Capital adequacy - memorandum items (CA4): a total must equal the sum of its parts (v0248_m)Blocking
- Capital adequacy - memorandum items (CA4): a total must equal the sum of its parts (v0247_m)Blocking
- Capital adequacy - memorandum items (CA4): a total must equal the sum of its parts (v0246_m)Blocking
- Capital adequacy - memorandum items (CA4): a total must equal the sum of its parts (v0245_m)Blocking
- Capital adequacy - memorandum items (CA4): a total must equal the sum of its parts (v0244_m)Blocking
- Capital adequacy - memorandum items (CA4): a total must equal the sum of its parts (v0243_m)Blocking
Every PRA banking rule on C04.00.01.01
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.
