Line4

2 min read · Bank of England banking taxonomy 4.1.1 · Updated 11 November 2026

Every PRA banking validation check, in plain words

Every one of the Bank of England's 3,226 active validation checks for the 24 returns of its banking taxonomy 4.1.1, in plain words: the 2,585 Line4 Check runs, every one proven on test files, and the 641 it does not run yet, each with the reason. Search for the code in your rejection message, read what the check means and what to do, then check your return in your browser.

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The 641 checks Line4 Check does not run, and why · Every check, run or not, for every framework

Browse by template

1,337 of the 3,226 checks are blocking: a return that fails one is normally rejected. The other 1,889 are warnings: they do not stop a return, but your supervisor may ask about them. Those marked “Not run” are not run by Line4 Check yet; each page says why.

MREL Debt (BR01.00.01.01) · 8 rules, 8 blocking
General information (MRL003) (BR700.00.01.01) · 3 rules, 3 blocking
Own funds (CA1) (C01.00.01.01) · 27 rules, 18 blocking
Capital adequacy - capital ratios (CA3) (C03.00.01.01) · 17 rules, 4 blocking
Capital adequacy - memorandum items (CA4) (C04.00.01.01) · 47 rules, 41 blocking
Group solvency: information on affiliates - total (GS Total) (C06.01.01.01) · 6 rules, 5 blocking
Group solvency: information on affiliates (GS) (C06.02.01.01) · 16 rules, 7 blocking
Credit risk and free deliveries: IRB approach to capital requirements: rwea flow statements (CR IRB 4) (C08.04.01.01) · 2 rules
Breakdown of credit exposures relevant for the calculation of the countercyclical buffer by country and institution-specific countercyclical buffer rate (CCB) (C09.04.01.01) · 6 rules, 1 blocking
Settlement/delivery risk (CR SETT) (C11.00.01.01) · 9 rules, 9 blocking
Credit risk: securitisations (CR SEC) (C13.01.01.01) · 56 rules
Detailed information on securitisations (CR SEC Details) (C14.00.01.01) · 29 rules, 1 blocking
Detailed information on securitisations by approach (CR SEC Details 2) (C14.01.01.01) · 11 rules
Market risk: internal models (MKR IM) (C24.00.01.01) · 11 rules, 6 blocking
Prudent valuation: fair-valued assets and liabilities (PRUVAL 1) (C32.01.01.01) · 18 rules, 16 blocking
Prudent valuation: core approach - Pre and post diversification (PRUVAL 2) (C32.02.01.01) · 27 rules, 15 blocking
Prudent valuation: core approach - AVAs assessed to have zero value (PRUVAL 2) (C32.02.01.02) · 5 rules, 5 blocking
Prudent valuation: core approach - Other (PRUVAL 2) (C32.02.01.03) · 10 rules, 5 blocking
Prudent valuation: model risk AVA (PRUVAL 3) (C32.03.01.01) · 6 rules, 3 blocking
Prudent valuation: concentrated positions AVA (PRUVAL 4) (C32.04.01.01) · 2 rules, 2 blocking
General governments exposures by country of the counterparty and regulatory approach (Gov) (C33.00.01.01) · 10 rules, 5 blocking
General governments exposures by country of the counterparty and regulatory approach (Gov) (C33.00.01.02) · 1 rule
Counterparty credit risk: size of the derivative business (CCR 1) (C34.01.01.01) · 8 rules
Counterparty credit risk: CCR exposures by approach (CCR 2) (C34.02.01.01) · 14 rules
Counterparty credit risk: CCR exposures treated with standardised approaches: SA-CCR or simplified SA-CCR (CCR 3) (C34.03.01.01) · 13 rules
Counterparty credit risk: CCR exposures treated with the original exposure method (OEM) (CCR 4) (C34.04.01.01) · 3 rules
Counterparty credit risk: CCR exposures treated with the internal model method (IMM) (CCR 5) (C34.05.01.01) · 10 rules
Counterparty credit risk: top twenty counterparties (CCR 6) (C34.06.01.01) · 1 rule
Counterparty credit risk: composition of collateral for CCR exposures - Collateral used in derivative transactions (CCR 8) (C34.08.01.01) · 2 rules
Counterparty credit risk: composition of collateral for CCR exposures - Collateral used in SFTs (CCR 8) (C34.08.01.02) · 2 rules
Counterparty credit risk: credit derivatives exposures (CCR 9) (C34.09.01.01) · 3 rules
Counterparty credit risk: exposures to CCPs (CCR 10) (C34.10.01.01) · 6 rules
Counterparty credit risk: rwea flow statements of CCR exposures under the IMM (CCR 11) (C34.11.01.01) · 2 rules
PRA110. Overnight and higher maturity. Total (CL66.01.01.01) · 5 rules, 1 blocking
PRA110. Initial stock. Total (CL66.01.01.02) · 3 rules
PRA110. LCR weight. Total (CL66.01.01.04) · 2 rules
PRA110. Monetisation Actions. Total (CL66.01.01.05) · 327 rules
PRA110. HQLA and usable liquidity. Initial Stock. Total (CL66.01.01.06) · 2 rules
PRA110. HQLA and usable liquidity. Overnight and higher maturity. Total (CL66.01.01.07) · 215 rules
PRA110. Overnight and higher maturity. Significant Currencies (CL66.02.01.01) · 5 rules, 1 blocking
PRA110. Initial stock. Significant Currencies (CL66.02.01.02) · 1 rule
PRA110. LCR weight. Significant Currencies (CL66.02.01.04) · 2 rules
PRA110. Monetisation Actions. Significant Currencies (CL66.02.01.05) · 327 rules
PRA110. HQLA and usable liquidity. Initial Stock. Significant Currencies (CL66.02.01.06) · 4 rules
PRA110. HQLA and usable liquidity. Overnight and higher maturity. Significant Currencies (CL66.02.01.07) · 215 rules
Own funds (CA1) (CP01.00.04.01) · 6 rules, 5 blocking
Own funds (CA1) (CP01.00.05.01) · 6 rules, 5 blocking
Own funds requirements (CA2) (CP02.00.04.01) · 13 rules, 11 blocking
Own funds requirements (CA2) (CP02.00.05.01) · 8 rules, 6 blocking
Memorandum Items (CA4) (CP04.00.04.01) · 3 rules, 3 blocking
Transitional provisions (CA5.1) (CP05.01.04.01) · 1 rule
Transitional provisions (CA5.1) (CP05.01.05.01) · 1 rule
Header Info (CP700.00.01.01) · 3 rules, 3 blocking
Balance Sheet: Forecast data [Assets] (FF01.01.01.01) · 1 rule, 1 blocking
Balance Sheet: Forecast data [Assets] (FF01.01.02.01) · 2 rules, 1 blocking
Balance Sheet: Forecast data [Liabilities] (FF01.02.01.01) · 1 rule, 1 blocking
Balance Sheet: Forecast data [Liabilities] (FF01.02.02.01) · 1 rule, 1 blocking
Balance Sheet: Forecast data [Equity] (FF01.03.01.01) · 7 rules, 7 blocking
Balance Sheet: Forecast data [Equity] (FF01.03.02.01) · 7 rules, 7 blocking
Statement of profit or loss: Forecast data (FF02.00.01.01) · 4 rules, 3 blocking
Statement of profit or loss: Forecast data (FF02.00.02.01) · 5 rules, 4 blocking
Memorandum items (FS701.00.01.01) · 1 rule, 1 blocking
Memorandum items (FS701.00.01.02) · 1 rule, 1 blocking
Alternative treatment of the exposure measure (LR1) (LV40.00.00.01) · 10 rules
On- and off-balance sheet items - additional breakdown of exposures (LR2) (LV41.00.00.01) · 3 rules, 3 blocking
(LR4) Alternative breakdown of leverage ratio exposure measure components: Off-balance sheet items, derivatives, SFTs and trading book (LV43.00.00.01) · 5 rules, 5 blocking
(LR4) Alternative breakdown of leverage ratio exposure measure components: Other non-trading book exposures (SA) (LV43.00.00.02) · 9 rules, 8 blocking
(LR4) Alternative breakdown of leverage ratio exposure measure components: Other non-trading book exposures (IRB) (LV43.00.00.03) · 9 rules, 8 blocking
Leverage ratio calculation (LRCalc) (LV47.00.00.01) · 25 rules, 20 blocking
(LR6) Treatment of collateral swaps (LV49.00.00.01) · 12 rules, 12 blocking
(LR7) Treatment of repurchase transactions (LV50.00.00.01) · 12 rules, 12 blocking
(LR8) Treatment of agency repurchase transactions (LV51.00.00.01) · 7 rules, 7 blocking
(LR9) Treatment of internalised trades (LV52.00.00.01) · 17 rules, 17 blocking
MREL Resources - nominal outstanding value (MR02.01.01.01) · 6 rules, 6 blocking
MREL Resources - accounting value (MR02.01.01.02) · 6 rules, 6 blocking
General information (MRL001) (MR700.00.01.01) · 3 rules, 3 blocking
Own funds requirements (CA2) (OF02.00.01.01) · 64 rules, 51 blocking
Output floor - RWA for modelled approaches (OFL) (OF02.01.01.01) · 2 rules, 1 blocking
Output floor - RWA for Standardised approaches (OFL) (OF02.01.01.02) · 2 rules, 1 blocking
Output floor - Total RWA (OFL) (OF02.01.01.03) · 6 rules, 1 blocking
Credit and counterparty credit risks and free deliveries: standardised approach to capital requirements (CR SA) (OF07.00.01.01) · 162 rules, 125 blocking
Credit and counterparty credit risks and free deliveries: standardised approach to capital requirements (CR SA) - Of which: Arising from Counterparty Credit Risk (OF07.00.01.02) · 30 rules, 14 blocking
Credit and counterparty credit risks and free deliveries: standardised approach to capital requirements (CR SA) - Memorandum items - Exposures in default (OF07.00.01.03) · 11 rules, 8 blocking
Credit and counterparty credit risks and free deliveries: standardised approach to capital requirements (CR SA) - Memorandum items - Equity exposures - transitional provisions (OF07.00.01.04) · 5 rules, 3 blocking
Credit and counterparty credit risks and free deliveries: standardised approach to capital requirements (CR SA) - Memorandum items - Retail and real estate exposures - subject to the currency mismatch multiplier (OF07.00.01.05) · 8 rules, 5 blocking
Credit and counterparty credit risks and free deliveries: IRB approach to capital requirements (CR IRB 1) (OF08.01.01.01) · 127 rules, 118 blocking
Credit and counterparty credit risks and free deliveries: IRB approach to capital requirements (CR IRB 1) - Of which arising from counterparty credit risk and off balance sheet (OF08.01.01.02) · 18 rules, 16 blocking
Credit and counterparty credit risks and free deliveries: IRB approach to capital requirements: breakdown by obligor grades or pools (CR IRB 2) (OF08.02.01.01) · 20 rules, 17 blocking
Credit risk and free deliveries: IRB approach to capital requirements: breakdown by PD ranges (CR IRB 3) (OF08.03.01.01) · 9 rules, 5 blocking
Credit risk and free deliveries: IRB approach to capital requirements: back-testing of PD (CR IRB 5) (OF08.05.00.01) · 6 rules, 4 blocking
Credit risk and free deliveries: IRB approach to capital requirements: back-testing of PD according to point (f) of article 180(1) (CR IRB 5) (OF08.05.01.01) · 3 rules
Credit risk and free deliveries: IRB approach to capital requirements: specialised lending slotting approach (CR IRB 6) (OF08.06.01.01) · 18 rules, 13 blocking
Credit risk and free deliveries: IRB approach to capital requirements: scope of use of IRB and SA approaches (CR IRB 7) (OF08.07.01.01) · 7 rules, 4 blocking
Geographical breakdown of exposures by residence of the obligor: SA exposures (OF CR GB 1) (OF09.01.01.01) · 105 rules, 15 blocking
Geographical breakdown of exposures by residence of the obligor: IRB exposures (CR GB 2) (OF09.02.01.01) · 71 rules, 51 blocking
Operational risk: part 2 - minimum required capital (OPR) (OF16.00.01.02) · 4 rules, 2 blocking
Operational risk: part 3 - business indicator component (OPR) (OF16.00.01.03) · 8 rules, 2 blocking
Operational risk: part 4 - business indicator and subcomponents (OPR) (OF16.00.01.04) · 12 rules, 2 blocking
Operational risk: part 5 - historical losses (OPR) (OF16.00.01.05) · 12 rules, 2 blocking
Market risk: standardised approach for position risks in traded debt instruments (MKR SA TDI) (OF18.00.01.01) · 29 rules, 20 blocking
Market risk: standardised approach for specific risk in securitisations (MKR SA SEC) (OF19.00.01.01) · 18 rules, 4 blocking
Market risk: standardised approach for specific risk in the correlation trading portfolio (MKR SA CTP) (OF20.00.01.01) · 15 rules, 5 blocking
Market risk: standardised approach for position risk in equities (MKR SA EQU) (OF21.00.01.01) · 18 rules, 18 blocking
Market risk: standardised approaches for foreign exchange risk (MKR SA FX) (OF22.00.01.01) · 15 rules, 14 blocking
Market risk: standardised approaches for position risk in commodities (MKR SA COM) (OF23.00.01.01) · 8 rules, 7 blocking
Market risk: internal model approach 1A (MKR IMA1A) (OF24.01.01.01) · 16 rules, 16 blocking
Market risk: internal model approach 1B (MKR IMA1B) (OF24.02.01.01) · 7 rules, 5 blocking
Market risk: IMA backtesting and P&L_Part 3 - Trading desk general information (MKR IMA2) (OF24.03.01.03) · 13 rules, 12 blocking
Credit valuation adjustment: CVA exposures by approach - Authorisations (CVA) (OF25.01.01.01) · 16 rules, 15 blocking
Credit valuation adjustment: CVA exposures by approach - Capital requirements and exposure values (CVA) (OF25.01.01.03) · 16 rules, 7 blocking
Credit valuation adjustment: CVA exposures by approach - Capital requirements during the transitional period (CVA) (OF25.01.01.04) · 11 rules, 11 blocking
Credit valuation adjustment: basic approach - Decomposition of full BA-CVA capital requirements (CVA BA) (OF25.02.01.01) · 3 rules
Credit valuation adjustment: basic approach - Decomposition of reduced BA-CVA capital requirements (CVA BA) (OF25.02.01.02) · 2 rules
Credit valuation adjustment: standardised approach - Decomposition of SA-CVA capital requirements (CVA SA) (OF25.03.01.01) · 4 rules, 4 blocking
Credit valuation adjustment: standardised approach - Bucket level capital requirements for SA-CVA counterparty credit spread delta risk (CVA SA) (OF25.03.01.02) · 2 rules, 1 blocking
Credit valuation adjustment: standardised approach - Bucket level capital requirements for SA-CVA interest rate risk (CVA SA) (OF25.03.01.03) · 2 rules, 1 blocking
Credit valuation adjustment: standardised approach - Bucket level capital requirements for SA-CVA interest rate risk - Other currencies (CVA SA) (OF25.03.01.04) · 3 rules
Credit valuation adjustment: standardised approach - Bucket level capital requirements for SA-CVA foreign exchange risk (CVA SA) (OF25.03.01.05) · 3 rules, 1 blocking
Credit valuation adjustment: standardised approach - Bucket level capital requirements for SA-CVA foreign exchange risk - Other currencies (CVA SA) (OF25.03.01.06) · 3 rules
Credit valuation adjustment: standardised approach - Bucket level capital requirements for SA-CVA reference credit spread risk (CVA SA) (OF25.03.01.07) · 3 rules, 1 blocking
Credit valuation adjustment: standardised approach - Bucket level capital requirements for SA-CVA equity risk (CVA SA) (OF25.03.01.08) · 3 rules, 1 blocking
Credit valuation adjustment: standardised approach - Bucket level capital requirements for SA-CVA commodity risk (CVA SA) (OF25.03.01.09) · 3 rules, 1 blocking
Counterparty credit risk: IRB approach - CCR exposures by exposure class and PD scale (CCR 7) (OF34.07.01.01) · 59 rules, 57 blocking
‌Market risk: authorisations - Trading book and market risk thresholds (MKR AUTH) (OF90.00.01.01) · 6 rules, 6 blocking
‌Market risk: authorisations - Market risk approaches (MKR AUTH) (OF90.00.01.02) · 1 rule, 1 blocking
Market risk: ASA general interest rate risk (AS1 IRR) (OF91.01.01.01) · 9 rules, 7 blocking
Market risk: ASA credit spread risk for non-securitisations (AS2 CSR) (OF91.02.01.01) · 8 rules, 7 blocking
Market risk: ASA credit spread risk for securitisation included in the alternative correlation trading portfolio (AS3 ACTP) (OF91.03.01.01) · 8 rules, 7 blocking
Market risk: ASA credit spread risk for securitisation not included in the alternative correlation trading portfolio (AS4 NACTP) (OF91.04.01.01) · 8 rules, 7 blocking
Market risk: ASA equity risk (AS5 EQ) (OF91.05.01.01) · 8 rules, 7 blocking
Market risk: ASA commodity risk (AS6 COM) (OF91.06.01.01) · 8 rules, 7 blocking
Market risk: ASA foreign exchange risk (AS7 FX) (OF91.07.01.01) · 7 rules, 6 blocking
Market risk: ASA default risk capital requirement (AS8 DRC) (OF91.08.01.01) · 3 rules, 3 blocking
Market risk: ASA residual risk add on (AS9 RRAO) (OF91.09.01.01) · 5 rules, 5 blocking
Market risk: ASA equity investment in funds (AS10 FUND) (OF91.10.01.01) · 2 rules, 2 blocking
General information (OF700.00.01.01) · 3 rules, 3 blocking
Own funds for SDDTs (CA1 SDDT) (SC01.00.01.01) · 9 rules, 6 blocking
Own funds for SDDTs (CA1 SDDT) (SC01.00.02.01) · 3 rules, 3 blocking
Own funds for SDDTs (CA1 SDDT) (SC01.00.03.01) · 2 rules, 1 blocking
Own funds requirements for SDDTs (CA2 SDDT) (SC02.00.01.01) · 4 rules, 2 blocking
Own funds requirements for SDDTs (CA2 SDDT) (SC02.00.02.01) · 3 rules, 2 blocking
Own funds requirements for SDDTs (CA2 SDDT) (SC02.00.03.01) · 1 rule
Capital adequacy - capital ratios and capital levels for SDDTs (CA3 SDDT) (SC03.00.01.01) · 6 rules, 6 blocking
Memorandum items for SDDTs (CA4 SDDT) (SC04.00.01.01) · 7 rules, 3 blocking
Memorandum items for SDDTs (CA4 SDDT) (SC04.00.03.01) · 1 rule
Group solvency: information on affiliates of SDDTs - total (GS SDDT TOTAL) (SC06.01.01.01) · 2 rules, 2 blocking
Group solvency: information on affiliates of SDDTs (GS SDDT) (SC06.02.01.01) · 2 rules, 1 blocking
Credit and counterparty credit risks and free deliveries: standardised approach to capital requirements for SDDTs (CR SA SDDT) (SC07.00.01.01) · 60 rules, 38 blocking
Credit and counterparty credit risks and free deliveries: standardised approach to capital requirements for SDDTs (CR SA SDDT) - Memorandum items - Exposures in default (SC07.00.01.03) · 8 rules, 5 blocking
Credit and counterparty credit risks and free deliveries: standardised approach to capital requirements for SDDTs (CR SA SDDT) - Memorandum items - Equity exposures - transitional provisions (SC07.00.01.04) · 3 rules, 1 blocking
Credit and counterparty credit risks and free deliveries: standardised approach to capital requirements for SDDTs (CR SA SDDT) - Memorandum items - Retail and real estate exposures - subject to the currency mismatch multiplier (SC07.00.01.05) · 7 rules, 6 blocking
Breakdown of relevant credit exposures of SDDTs by country (SC09.04.01.01) · 1 rule
Credit risk: securitisations for SDDTs (CR SEC SDDT) (SC13.01.01.01) · 5 rules
Detailed information on securitisations for SDDTs (SEC Details SDDT) (SC14.00.01.01) · 1 rule
Detailed information on securitisations by approach (CR SEC Details 2) (SC14.01.01.01) · 12 rules
Information on foreign exchange risk for SDDTs (MKR SA FX SDDT) (SC22.00.01.01) · 1 rule, 1 blocking
Information on derivatives, securities financing and long settlement transactions of SDDTs (CCR SDDT) (SC34.00.01.01) · 8 rules, 5 blocking
Information on derivatives, securities financing and long settlement transactions of SDDTs (CCR SDDT) - Total assets and Percentage of total assets (SC34.00.01.03) · 2 rules, 2 blocking
‌Size of SDDTs' trading business (STB SDDT) (SC90.00.01.01) · 1 rule, 1 blocking
Header Info (SC700.00.01.01) · 3 rules, 3 blocking
PRA supplementary data section (SC701.00.03.01) · 1 rule
Part 1: Assets (SR01.01.03.01) · 6 rules, 6 blocking
Part 2: Liabilities (SR01.02.03.01) · 4 rules, 4 blocking
Statement of profit or loss (SR02.00.03.01) · 9 rules, 9 blocking
Statement of comprehensive income (SR03.00.03.01) · 3 rules, 3 blocking
Intragroup financial reporting (detailed breakdown) Financial assets subject to impairment that are past due (SR07.01.04.01) · 2 rules, 2 blocking
Intragroup financial reporting (detailed breakdown) Breakdown of financial liabilities (SR08.01.04.01) · 9 rules, 6 blocking
Intragroup financial reporting (detailed breakdown) Part 1: Loan commitments, financial guarantees and other commitments given to other group entities (SR09.01.04.01) · 6 rules, 6 blocking
Intragroup financial reporting (detailed breakdown) Part 2: Loan commitments, financial guarantees and other commitments received from other group entities (SR09.02.04.01) · 2 rules, 2 blocking
Intragroup financial reporting (detailed breakdown) Derivatives (SR10.00.04.01) · 17 rules, 14 blocking
Intragroup financial reporting (detailed breakdown) Part 1: Fair value hierarchy: financial instruments at fair value (SR14.00.04.01) · 12 rules, 12 blocking
Intragroup financial reporting (detailed breakdown) Part 1: Interest income and expenses by instrument and counterparty sector (SR16.01.04.01) · 5 rules, 4 blocking
Intragroup financial reporting (detailed breakdown) Part 2: Gains or losses on derecognition of financial assets and liabilities not measured at fair value through profit or loss by instrument (SR16.02.04.01) · 1 rule, 1 blocking
Intragroup financial reporting (detailed breakdown) Part 3: Gains or losses on financial assets and liabilities held for trading by instrument (SR16.03.04.01) · 1 rule, 1 blocking
Intragroup financial reporting (detailed breakdown) Part 5: Gains or losses on financial assets and liabilities designated at fair value through profit or loss by instrument (SR16.05.04.01) · 1 rule, 1 blocking
Intragroup financial reporting (detailed breakdown) Information on performing and non-performing exposures to other group entities (SR18.00.04.01) · 8 rules, 6 blocking
Intragroup financial reporting (detailed breakdown) Information on performing and non-performing exposures to other group entities (SR18.00.04.02) · 14 rules, 13 blocking
Intragroup financial reporting (detailed breakdown) Information on performing and non-performing exposures to other group entities (SR18.00.04.03) · 7 rules, 5 blocking
Intragroup financial reporting (detailed breakdown) Information on performing and non-performing exposures (SR18.00.04.04) · 5 rules, 4 blocking
Intragroup financial reporting (detailed breakdown) Information on performing and non-performing exposures (SR18.00.04.05) · 4 rules, 1 blocking
Intragroup financial reporting (detailed breakdown) Information on forborne exposures to other group entities (SR19.00.04.01) · 15 rules, 15 blocking
Intragroup financial reporting (detailed breakdown) Information on forborne exposures to other group entities (SR19.00.04.02) · 11 rules, 7 blocking
Intragroup financial reporting (detailed breakdown) Information on forborne exposures to other group entities (SR19.00.04.03) · 5 rules, 5 blocking
Intragroup financial reporting (detailed breakdown) Information on forborne exposures to other group entities (SR19.00.04.04) · 11 rules, 6 blocking
Intragroup financial reporting (detailed breakdown) Information on forborne exposures (SR19.00.04.05) · 4 rules, 3 blocking
Intragroup financial reporting (detailed breakdown) Asset management, custody and other service functions Part 1: Fee and commission income and expenses by activity (SR22.01.04.01) · 6 rules, 6 blocking
Intragroup financial reporting (detailed breakdown) Asset management, custody and other service functions Part 2: Assets involved in the services provided (SR22.02.04.01) · 5 rules, 5 blocking
Intragroup financial reporting (detailed breakdown) Part 2: Fair value hierarchy: financial instruments at amortised cost (SR41.01.04.01) · 4 rules, 4 blocking
Technical table (SR99.01.01.01) · 7 rules, 7 blocking
Part 2: Exposures to intragroup counterparties (SR801.02.01.01) · 10 rules, 10 blocking
Part 3: Detail of the exposures to intragroup counterparties (entity breakdown) (SR801.03.01.01) · 10 rules, 9 blocking
Part 4: Instrument and collateral breakdown (SR801.04.01.01) · 19 rules
Part 1: Bank levy (SR805.01.05.01) · 2 rules
Part 2: VAT (SR805.02.05.01) · 3 rules
Excluded activity entities Part 1: Dealing in investments as principal and commodities trading (excluding derivatives) (SR806.01.06.01) · 1 rule
Excluded activity entities Part 2: Dealing in investments as principal and commodities trading: derivatives transactions (SR806.02.06.01) · 1 rule
Excluded activity entities Part 3: Financial institution exposures excluding capital holdings (SR806.03.06.01) · 1 rule
Excluded activity entities Part 4: Financial institution exposures: capital holdings (SR806.04.06.01) · 1 rule
Part 1: Aggregate information (SR807.01.07.01) · 8 rules
Part 1: Aggregate information (SR807.01.07.02) · 20 rules
Part 2: Interbank payment systems (SR807.02.07.01) · 5 rules, 2 blocking
Part 3: Central securities depositories (SR807.03.07.01) · 3 rules
Part 4: Central counterparties (SR807.04.07.01) · 3 rules
Part 1: Overview (SR808.01.08.01) · 3 rules, 3 blocking
Part 2: Commodity trading (article 5(1)) (SR808.01.08.02) · 1 rule
Part 3: Hedging Own Risk (articles 6(1) and 6(2)) (SR808.01.08.03) · 1 rule
Excluded activities and prohibitions Risk management transactions Part 4: Exposure to Financial Institutions - for hedging risk (articles 14(2), 14(3) and 14(5)) (SR808.01.08.04) · 10 rules, 1 blocking
Part 1: Overview (SR808.02.08.01) · 5 rules, 5 blocking
Part 2: Collateral required for derivative transactions entered into as part of risk management (article 6(3)(b)) (SR808.02.08.02) · 4 rules, 1 blocking
Part 3: Security interest over investments (article 6(6)(a)) (SR808.02.08.03) · 2 rules
Part 4: Title transfer collateral arrangements in relation to investments (article 6(6)(b)) (SR808.02.08.04) · 2 rules
Part 5: Security interest over commodities (article 5(3)(a)) (SR808.02.08.05) · 2 rules
Part 6: Title transfer collateral arrangements in relation to commodities (article 5(3)(b)) (SR808.02.08.06) · 2 rules
Part 1: Overview (SR808.03.08.01) · 1 rule, 1 blocking
Part 2: Transactions (SR808.03.08.02) · 1 rule
Part 1: Overview (SR808.04.08.01) · 1 rule, 1 blocking
Part 2: Programme information (SR808.04.08.02) · 1 rule
Part 1: Overview (SR808.05.08.01) · 1 rule, 1 blocking
Part 2: Transactions with central banks (SR808.05.08.02) · 2 rules
Part 1: Overview (SR808.06.08.01) · 1 rule, 1 blocking
Part 2: Transactions with Account Holders (SR808.06.08.02) · 1 rule
Part 3: RRR conditions (SR808.06.08.03) · 1 rule
Part 4: breaches (SR808.06.08.04) · 1 rule
Part 1: Overview (SR808.07.08.01) · 1 rule, 1 blocking
Part 2: trade finance exposures (SR808.07.08.02) · 2 rules, 1 blocking
Part 1: Overview (SR808.08.08.01) · 1 rule, 1 blocking
Part 2: Exposures to conduits and infrastructure finance vehicles (SR808.08.08.02) · 1 rule
Part 1: Overview (SR808.09.08.01) · 1 rule, 1 blocking
Part 2: Exposures to relevant financial institutions relating to pension liability (SR808.09.08.02) · 1 rule

What Line4 Check does not run, and why

Counted return by return, 646 of the Bank's active checks for these returns do not run in Line4 Check. Line4 Check never counts a check it does not run as passed. Each has its own page, under its reason and return:

Held back after a different result on a test file: 74They gave a different result on at least one of Line4’s test files: a different outcome, or a different number of times tested. They are held back while we settle which is right, and stay out until they are proven.

Own Funds (PRA001): 73

Excluded activities and prohibitions (RFB008): 1

Held back, never run on a test file: 6They never run on any test file of the return, so they cannot be proven yet. They are held back until they are proven.

Step-in risk (PRA115): 3

Excluded activities and prohibitions (RFB008): 1

Not compiled, as no cell matches what they read: 552Each reads a value that matches no cell of the return’s templates, so Line4 could not compile them.

Liquidity Pillar II (PRA110): 552

Checks that use logarithms: 4Browsers and computers do not all compute logarithms to the same last digit, so the result could depend on the machine. Line4 Check leaves them out.
In the Bank’s list but missing from its package: 1The Bank’s list of validations says this check is in its XBRL for the return, but the Bank’s taxonomy package has no such check for it, so there is no formula to run.

Intragroup financial reporting (core and detailed breakdowns) (RFB004): 1

On items no template of the return has: 9They read only concepts or members that none of the return’s templates has, so they can never apply to it. They are not counted as run.

How these pages are written

Every page is written from the Bank of England's own data: its validations workbooks for the banking taxonomy 4.1.1 (each check's words, formula, scope, severity and returns), the row, column and sheet names of the Bank's templates, and Line4 Check's published rule files, which say for each return whether a check runs and, if not, why. Nothing is guessed, and no page is written by hand.

Where the Bank's own words are plain English, they lead, word for word, and the Bank's formula follows, spelled out with the name of every cell it reads. Where the Bank's words are technical (a code and a formula), the spelled-out formula leads and the Bank's words follow. Labels the Bank writes in capitals are shown in sentence case. The Bank uses a few codes for different checks in different returns (boe_b1001 checks exposures in PRA001 and an LEI in PRA115); their pages describe each one.

Checks like this one, run at the point of submission, are the first step to real-time supervision.

Check a return now