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

Own funds for SDDTs (CA1 SDDT): "Additional tier 1 (AT1) capital" must equal the sum of 7 rows (SC01.00.02.01, Bank of England check boe_b0008_ss)

A blocking check on the own funds for SDDTs (CA1 SDDT) template (SC01.00.02.01), in the capital+ forecast semi annual for SDDTs and SDDT consolidation entities (PRA117) return.

Line4 Check runs it on the capital+ forecast semi annual for SDDTs and SDDT consolidation entities (PRA117) 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

In each of 5 columns (listed below) of Own funds for SDDTs (CA1 SDDT) (SC01.00.02.01): "Additional tier 1 (AT1) capital" (row 0530) must equal the sum of 7 rows (listed below).

What to do if your return fails it

  1. 01Open the table below and find the cells the rule reads.
  2. 02Add up the parts in your return and compare the result with the total.
  3. 03If they differ, a part is missing, a value sits in the wrong cell, or the total is out of date.
  4. 04The Bank of England allows a small rounding difference, worked out from the decimals each value is reported with.
  5. 05It runs only when your filing indicators mark SC01.00.02 as reported.
  6. 06This is a blocking check. A return that fails it is normally rejected, so fix it before you submit.

The cells it reads

Own funds for SDDTs (CA1 SDDT) (SC01.00.02.01)

Rows

  • R0530Additional tier 1 (AT1) capital
  • R0540Capital instruments eligible as AT1 Capital
  • R0670Instruments issued by subsidiaries that are given recognition in AT1 Capital
  • R0690(-) Reciprocal cross holdings in AT1 Capital
  • R0720(-) Excess of deduction from T2 items over T2 Capital
  • R0740Excess of deduction from AT1 items over AT1 Capital (deducted in CET1)
  • R0744(-) Additional deductions of AT1 Capital due to Article 3 CRR
  • R0748AT1 capital elements or deductions - other

Columns

  • C0030Q2
  • C0050Q4
  • C0070Q6
  • C0090Q8
  • C0100Year-end following Q8

Which returns it applies to

Line4 Check runs it on the capital+ forecast semi annual for SDDTs and SDDT consolidation entities (PRA117) return on Bank of England banking taxonomy 4.1.1. The Bank of England applies it to capital+ forecast semi annual for SDDTs and SDDT consolidation entities (PRA117) 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:

[boe_b0008_ss];[scope({t: SC01.00.02.01, c:0030;0050;0070;0090;0100})];[{t: SC01.00.02.01, r: 0530} = sum({t: SC01.00.02.01, r: 0540; 0670; 0690; 0720; 0740; 0744; 0748})]
Show the formulaShow

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

{t: SC01.00.02.01, r: 0530} = sum({t: SC01.00.02.01, r: 0540; 0670; 0690; 0720; 0740; 0744; 0748})

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

scope({t: SC01.00.02.01, c:0030;0050;0070;0090;0100, f: banking, fv: capital_plus_sddt})

Every PRA banking rule on SC01.00.02.01

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.