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fx_conversion

fx_conversion-2026200001

One entry is restated in EUR with the rate in the narrative.

expects fx_conversion

Statement files

2 highlighted lines differ from the same seed rendered without perturbations. That difference is the trap.

bnp_camt053.xml2 changed lines · first at line 434
<?xml version='1.0' encoding='utf-8'?>
<Document xmlns="urn:iso:std:iso:20022:tech:xsd:camt.053.001.02">
<BkToCstmrStmt>
<GrpHdr>
<MsgId>LB-acct-2026200001-2-2025-01-31</MsgId>
<CreDtTm>2025-01-31T23:59:00+00:00</CreDtTm>
</GrpHdr>
<Stmt>
<Id>acct-2026200001-2</Id>
<ElctrncSeqNb>1</ElctrncSeqNb>
<CreDtTm>2025-01-31T23:59:00+00:00</CreDtTm>
<FrToDt>
<FrDtTm>2025-01-01T00:00:00+00:00</FrDtTm>
<ToDtTm>2025-01-31T23:59:59+00:00</ToDtTm>
</FrToDt>
<Acct>
<Id>
<IBAN>GB19LBEN64521181771329</IBAN>
</Id>
<Ccy>GBP</Ccy>
</Acct>
<Bal>
<Tp>
<CdOrPrtry>
<Cd>OPBD</Cd>
</CdOrPrtry>
</Tp>
<Amt Ccy="GBP">150769.31</Amt>
<CdtDbtInd>CRDT</CdtDbtInd>
<Dt>
<Dt>2025-01-01</Dt>
</Dt>
</Bal>
<Ntry>
<Amt Ccy="GBP">8721.02</Amt>
<CdtDbtInd>DBIT</CdtDbtInd>
<Sts>BOOK</Sts>
<BookgDt>
<Dt>2025-01-02</Dt>
</BookgDt>
<ValDt>
<Dt>2025-01-02</Dt>
</ValDt>
<AcctSvcrRef>acct-2026200001-2-t028</AcctSvcrRef>
<NtryDtls>
<TxDtls>
<RmtInf>
<Ustrd>BP GREENHOLM FOODS REF608124</Ustrd>
</RmtInf>
</TxDtls>
</NtryDtls>
</Ntry>
<Ntry>
<Amt Ccy="GBP">5410.35</Amt>
<CdtDbtInd>DBIT</CdtDbtInd>
<Sts>BOOK</Sts>
<BookgDt>
<Dt>2025-01-03</Dt>
</BookgDt>
<ValDt>
<Dt>2025-01-03</Dt>
</ValDt>
<AcctSvcrRef>acct-2026200001-2-t027</AcctSvcrRef>
<NtryDtls>
<TxDtls>
<RmtInf>
<Ustrd>FPO CASTLEGATE PROPERTY REF943700</Ustrd>
</RmtInf>
</TxDtls>
</NtryDtls>
</Ntry>
<Ntry>
<Amt Ccy="GBP">14533.75</Amt>
<CdtDbtInd>DBIT</CdtDbtInd>
<Sts>BOOK</Sts>
<BookgDt>
<Dt>2025-01-04</Dt>
</BookgDt>
<ValDt>
<Dt>2025-01-04</Dt>
</ValDt>
<AcctSvcrRef>acct-2026200001-2-t002</AcctSvcrRef>
<NtryDtls>
<TxDtls>
<RmtInf>
<Ustrd>SO OSPREY LEASING REF728851</Ustrd>
</RmtInf>
</TxDtls>
</NtryDtls>
</Ntry>
<Ntry>
<Amt Ccy="GBP">6266.83</Amt>
<CdtDbtInd>DBIT</CdtDbtInd>
<Sts>BOOK</Sts>
<BookgDt>
<Dt>2025-01-06</Dt>
</BookgDt>
<ValDt>
<Dt>2025-01-06</Dt>
</ValDt>
<AcctSvcrRef>acct-2026200001-2-t022</AcctSvcrRef>
<NtryDtls>
<TxDtls>
<RmtInf>
<Ustrd>FPO JUNIPER PAYROLL REF468533</Ustrd>
</RmtInf>
</TxDtls>
</NtryDtls>
</Ntry>
<Ntry>
<Amt Ccy="GBP">9020.11</Amt>
<CdtDbtInd>DBIT</CdtDbtInd>
<Sts>BOOK</Sts>
<BookgDt>
<Dt>2025-01-06</Dt>
</BookgDt>
<ValDt>
<Dt>2025-01-06</Dt>
</ValDt>
<AcctSvcrRef>acct-2026200001-2-t025</AcctSvcrRef>
<NtryDtls>
<TxDtls>
<RmtInf>
<Ustrd>SO GREENHOLM FOODS REF507057</Ustrd>
</RmtInf>
</TxDtls>
</NtryDtls>
</Ntry>
<Ntry>
<Amt Ccy="GBP">12432.86</Amt>
<CdtDbtInd>CRDT</CdtDbtInd>
<Sts>BOOK</Sts>
<BookgDt>
<Dt>2025-01-09</Dt>
</BookgDt>
<ValDt>
<Dt>2025-01-09</Dt>
</ValDt>
<AcctSvcrRef>acct-2026200001-2-t012</AcctSvcrRef>
<NtryDtls>
<TxDtls>
<RmtInf>
<Ustrd>FPI KESTREL INSURANCE REF825877</Ustrd>
</RmtInf>
</TxDtls>
</NtryDtls>
</Ntry>
<Ntry>
<Amt Ccy="GBP">1829.20</Amt>
<CdtDbtInd>CRDT</CdtDbtInd>
<Sts>BOOK</Sts>
<BookgDt>
<Dt>2025-01-10</Dt>
</BookgDt>
<ValDt>
<Dt>2025-01-10</Dt>
</ValDt>
<AcctSvcrRef>acct-2026200001-2-t007</AcctSvcrRef>
<NtryDtls>
<TxDtls>
<RmtInf>
<Ustrd>CR NORTHGATE CLEANING REF269799</Ustrd>
</RmtInf>
</TxDtls>
</NtryDtls>
</Ntry>
<Ntry>
<Amt Ccy="GBP">11627.31</Amt>
<CdtDbtInd>DBIT</CdtDbtInd>
<Sts>BOOK</Sts>
<BookgDt>
<Dt>2025-01-10</Dt>
</BookgDt>
<ValDt>
<Dt>2025-01-10</Dt>
</ValDt>
<AcctSvcrRef>acct-2026200001-2-t009</AcctSvcrRef>
<NtryDtls>
<TxDtls>
<RmtInf>
<Ustrd>SO OSPREY LEASING REF666316</Ustrd>
</RmtInf>
</TxDtls>
</NtryDtls>
</Ntry>
<Ntry>
<Amt Ccy="GBP">13901.08</Amt>
<CdtDbtInd>DBIT</CdtDbtInd>
<Sts>BOOK</Sts>
<BookgDt>
<Dt>2025-01-12</Dt>
</BookgDt>
<ValDt>
<Dt>2025-01-12</Dt>
</ValDt>
<AcctSvcrRef>acct-2026200001-2-t026</AcctSvcrRef>
<NtryDtls>
<TxDtls>
<RmtInf>
<Ustrd>DD DELPHINIUM MEDIA REF223915</Ustrd>
</RmtInf>
</TxDtls>
</NtryDtls>
</Ntry>
<Ntry>
<Amt Ccy="GBP">11316.13</Amt>
<CdtDbtInd>DBIT</CdtDbtInd>
<Sts>BOOK</Sts>
<BookgDt>
<Dt>2025-01-13</Dt>
</BookgDt>
<ValDt>
<Dt>2025-01-13</Dt>
</ValDt>
<AcctSvcrRef>acct-2026200001-2-t001</AcctSvcrRef>
<NtryDtls>
<TxDtls>
<RmtInf>
<Ustrd>FPO OSPREY LEASING REF606601</Ustrd>
</RmtInf>
</TxDtls>
</NtryDtls>
</Ntry>
<Ntry>
<Amt Ccy="GBP">11079.70</Amt>
<CdtDbtInd>CRDT</CdtDbtInd>
<Sts>BOOK</Sts>
<BookgDt>
<Dt>2025-01-13</Dt>
</BookgDt>
<ValDt>
<Dt>2025-01-13</Dt>
</ValDt>
<AcctSvcrRef>acct-2026200001-2-t006</AcctSvcrRef>
<NtryDtls>
<TxDtls>
<RmtInf>
<Ustrd>TFR AURORA CONSULTING LTD REF954154</Ustrd>
</RmtInf>
</TxDtls>
</NtryDtls>
</Ntry>
<Ntry>
<Amt Ccy="GBP">7994.74</Amt>
<CdtDbtInd>CRDT</CdtDbtInd>
<Sts>BOOK</Sts>
<BookgDt>
<Dt>2025-01-13</Dt>
</BookgDt>
<ValDt>
<Dt>2025-01-13</Dt>
</ValDt>
<AcctSvcrRef>acct-2026200001-2-t014</AcctSvcrRef>
<NtryDtls>
<TxDtls>
<RmtInf>
<Ustrd>FPI CASTLEGATE PROPERTY REF393441</Ustrd>
</RmtInf>
</TxDtls>
</NtryDtls>
</Ntry>
<Ntry>
<Amt Ccy="GBP">12411.86</Amt>
<CdtDbtInd>DBIT</CdtDbtInd>
<Sts>BOOK</Sts>
<BookgDt>
<Dt>2025-01-13</Dt>
</BookgDt>
<ValDt>
<Dt>2025-01-13</Dt>
</ValDt>
<AcctSvcrRef>acct-2026200001-2-t018</AcctSvcrRef>
<NtryDtls>
<TxDtls>
<RmtInf>
<Ustrd>DD HARBOURLIGHT IT REF793819</Ustrd>
</RmtInf>
</TxDtls>
</NtryDtls>
</Ntry>
<Ntry>
<Amt Ccy="GBP">9086.82</Amt>
<CdtDbtInd>CRDT</CdtDbtInd>
<Sts>BOOK</Sts>
<BookgDt>
<Dt>2025-01-13</Dt>
</BookgDt>
<ValDt>
<Dt>2025-01-13</Dt>
</ValDt>
<AcctSvcrRef>acct-2026200001-2-t024</AcctSvcrRef>
<NtryDtls>
<TxDtls>
<RmtInf>
<Ustrd>TFR HARBOURLIGHT IT REF623016</Ustrd>
</RmtInf>
</TxDtls>
</NtryDtls>
</Ntry>
<Ntry>
<Amt Ccy="GBP">14118.71</Amt>
<CdtDbtInd>CRDT</CdtDbtInd>
<Sts>BOOK</Sts>
<BookgDt>
<Dt>2025-01-15</Dt>
</BookgDt>
<ValDt>
<Dt>2025-01-15</Dt>
</ValDt>
<AcctSvcrRef>acct-2026200001-2-t008</AcctSvcrRef>
<NtryDtls>
<TxDtls>
<RmtInf>
<Ustrd>FPI CASTLEGATE PROPERTY REF991195</Ustrd>
</RmtInf>
</TxDtls>
</NtryDtls>
</Ntry>
<Ntry>
<Amt Ccy="GBP">5471.58</Amt>
<CdtDbtInd>CRDT</CdtDbtInd>
<Sts>BOOK</Sts>
<BookgDt>
<Dt>2025-01-15</Dt>
</BookgDt>
<ValDt>
<Dt>2025-01-15</Dt>
</ValDt>
<AcctSvcrRef>acct-2026200001-2-t019</AcctSvcrRef>
<NtryDtls>
<TxDtls>
<RmtInf>
<Ustrd>FPI AURORA CONSULTING LTD REF247692</Ustrd>
</RmtInf>
</TxDtls>
</NtryDtls>
</Ntry>
<Ntry>
<Amt Ccy="GBP">470.84</Amt>
<CdtDbtInd>DBIT</CdtDbtInd>
<Sts>BOOK</Sts>
<BookgDt>
<Dt>2025-01-16</Dt>
</BookgDt>
<ValDt>
<Dt>2025-01-16</Dt>
</ValDt>
<AcctSvcrRef>acct-2026200001-2-t010</AcctSvcrRef>
<NtryDtls>
<TxDtls>
<RmtInf>
<Ustrd>DD NORTHGATE CLEANING REF116753</Ustrd>
</RmtInf>
</TxDtls>
</NtryDtls>
</Ntry>
<Ntry>
<Amt Ccy="GBP">4159.29</Amt>
<CdtDbtInd>CRDT</CdtDbtInd>
<Sts>BOOK</Sts>
<BookgDt>
<Dt>2025-01-16</Dt>
</BookgDt>
<ValDt>
<Dt>2025-01-16</Dt>
</ValDt>
<AcctSvcrRef>acct-2026200001-2-t021</AcctSvcrRef>
<NtryDtls>
<TxDtls>
<RmtInf>
<Ustrd>TFR BRAMBLE LOGISTICS REF879674</Ustrd>
</RmtInf>
</TxDtls>
</NtryDtls>
</Ntry>
<Ntry>
<Amt Ccy="GBP">7764.67</Amt>
<CdtDbtInd>DBIT</CdtDbtInd>
<Sts>BOOK</Sts>
<BookgDt>
<Dt>2025-01-19</Dt>
</BookgDt>
<ValDt>
<Dt>2025-01-19</Dt>
</ValDt>
<AcctSvcrRef>acct-2026200001-2-t029</AcctSvcrRef>
<NtryDtls>
<TxDtls>
<RmtInf>
<Ustrd>SO HARBOURLIGHT IT REF580179</Ustrd>
</RmtInf>
</TxDtls>
</NtryDtls>
</Ntry>
<Ntry>
<Amt Ccy="GBP">9523.03</Amt>
<CdtDbtInd>CRDT</CdtDbtInd>
<Sts>BOOK</Sts>
<BookgDt>
<Dt>2025-01-20</Dt>
hsbc_statement.xlsxUntouched by this perturbation
[sheet: Statement]
HSBC Bank plc
Business Current Account Statement
Account name: LEDGERBENCH DEMO LTD
Sort code / Account number: 76-36-72 38611393
Account reference: acct-2026200001-1
Statement period: 01 Jan 2025 to 31 Jan 2025
Currency: GBP
Opening balance: 171346.69
Date Payment type Details Paid out Paid in
01 Jan 2025 FPI LARKSPUR TRAVEL REF797226 6557.26
01 Jan 2025 FPO NORTHGATE CLEANING REF785886 11174.05
03 Jan 2025 FPO HARBOURLIGHT IT REF736056 4190.37
10 Jan 2025 FPO NORTHGATE CLEANING REF301664 11842.43
10 Jan 2025 SO BRAMBLE LOGISTICS REF836188 1640.58
11 Jan 2025 TFR CASTLEGATE PROPERTY REF227768 13563.91
11 Jan 2025 TFR HARBOURLIGHT IT REF995781 11268.96
12 Jan 2025 SO IRONBRIDGE TOOLING REF545516 5563.84
12 Jan 2025 SO KESTREL INSURANCE REF124255 5624.06
14 Jan 2025 DD MOORLAND TELECOM REF763704 1465.19
14 Jan 2025 TFR DELPHINIUM MEDIA REF182294 5826.70
17 Jan 2025 BP IRONBRIDGE TOOLING REF658318 9796.22
18 Jan 2025 FPI MOORLAND TELECOM REF967575 11244.93
18 Jan 2025 TFR NORTHGATE CLEANING REF303010 3587.33
19 Jan 2025 FPO EASTFIELD ENERGY REF500290 7717.65
20 Jan 2025 FPO MOORLAND TELECOM REF191105 8451.70
21 Jan 2025 DD HARBOURLIGHT IT REF359687 5989.40
23 Jan 2025 DD FENWICK & PARTNERS REF948661 12568.64
23 Jan 2025 FPI IRONBRIDGE TOOLING REF737660 10584.39
24 Jan 2025 CR AURORA CONSULTING LTD REF579769 8854.56
25 Jan 2025 TFR MOORLAND TELECOM REF236856 63.17
27 Jan 2025 TFR BRAMBLE LOGISTICS REF228541 13405.21
29 Jan 2025 CR EASTFIELD ENERGY REF523655 12201.64
30 Jan 2025 FPI DELPHINIUM MEDIA REF647947 11994.28
rbs_transactions.csvUntouched by this perturbation
"Date","Type","Description","Value","Account Name","Account Number","Ledger Ref"
"01/01/2025","BAL","OPENING BALANCE","78959.92","LEDGERBENCH DEMO LTD","89-69-65 80729489","acct-2026200001-3"
"01/01/2025","SO","SO JUNIPER PAYROLL REF567113","-6684.64","LEDGERBENCH DEMO LTD","89-69-65 80729489","acct-2026200001-3"
"02/01/2025","CR","CR BRAMBLE LOGISTICS REF223965","2497.77","LEDGERBENCH DEMO LTD","89-69-65 80729489","acct-2026200001-3"
"03/01/2025","BP","BP KESTREL INSURANCE REF649323","-316.85","LEDGERBENCH DEMO LTD","89-69-65 80729489","acct-2026200001-3"
"03/01/2025","SO","SO JUNIPER PAYROLL REF379376","-14.67","LEDGERBENCH DEMO LTD","89-69-65 80729489","acct-2026200001-3"
"03/01/2025","FPO","FPO NORTHGATE CLEANING REF524183","-12415.50","LEDGERBENCH DEMO LTD","89-69-65 80729489","acct-2026200001-3"
"04/01/2025","DD","DD KESTREL INSURANCE REF938364","-8006.68","LEDGERBENCH DEMO LTD","89-69-65 80729489","acct-2026200001-3"
"05/01/2025","FPI","FPI GREENHOLM FOODS REF252523","8913.17","LEDGERBENCH DEMO LTD","89-69-65 80729489","acct-2026200001-3"
"07/01/2025","FPO","FPO DELPHINIUM MEDIA REF618712","-12165.56","LEDGERBENCH DEMO LTD","89-69-65 80729489","acct-2026200001-3"
"08/01/2025","BP","BP MOORLAND TELECOM REF127158","-2088.09","LEDGERBENCH DEMO LTD","89-69-65 80729489","acct-2026200001-3"
"09/01/2025","SO","SO FENWICK & PARTNERS REF591856","-14715.06","LEDGERBENCH DEMO LTD","89-69-65 80729489","acct-2026200001-3"
"12/01/2025","FPO","FPO MOORLAND TELECOM REF258142","-3546.15","LEDGERBENCH DEMO LTD","89-69-65 80729489","acct-2026200001-3"
"13/01/2025","FPI","FPI FENWICK & PARTNERS REF504856","14091.89","LEDGERBENCH DEMO LTD","89-69-65 80729489","acct-2026200001-3"
"15/01/2025","DD","DD BRAMBLE LOGISTICS REF893435","-14686.03","LEDGERBENCH DEMO LTD","89-69-65 80729489","acct-2026200001-3"
"18/01/2025","DD","DD HARBOURLIGHT IT REF973427","-13284.41","LEDGERBENCH DEMO LTD","89-69-65 80729489","acct-2026200001-3"
"18/01/2025","DD","DD FENWICK & PARTNERS REF460707","-6183.10","LEDGERBENCH DEMO LTD","89-69-65 80729489","acct-2026200001-3"
"19/01/2025","FPO","FPO CASTLEGATE PROPERTY REF217338","-12152.99","LEDGERBENCH DEMO LTD","89-69-65 80729489","acct-2026200001-3"
"19/01/2025","TFR","TFR MOORLAND TELECOM REF374782","8296.75","LEDGERBENCH DEMO LTD","89-69-65 80729489","acct-2026200001-3"
"20/01/2025","FPO","FPO EASTFIELD ENERGY REF161177","-3921.29","LEDGERBENCH DEMO LTD","89-69-65 80729489","acct-2026200001-3"
"20/01/2025","FPI","FPI BRAMBLE LOGISTICS REF383625","9004.38","LEDGERBENCH DEMO LTD","89-69-65 80729489","acct-2026200001-3"
"20/01/2025","BP","BP DELPHINIUM MEDIA REF878283","-6991.35","LEDGERBENCH DEMO LTD","89-69-65 80729489","acct-2026200001-3"
"25/01/2025","FPO","FPO AURORA CONSULTING LTD REF321438","-14505.33","LEDGERBENCH DEMO LTD","89-69-65 80729489","acct-2026200001-3"
"28/01/2025","SO","SO BRAMBLE LOGISTICS REF427482","-14230.98","LEDGERBENCH DEMO LTD","89-69-65 80729489","acct-2026200001-3"
"30/01/2025","CR","CR LARKSPUR TRAVEL REF987691","9151.51","LEDGERBENCH DEMO LTD","89-69-65 80729489","acct-2026200001-3"
 

Ground truth

Public here because the benchmark is open; it is the model's prompt path that can never reach these values, not human readers.

AccountClosing balance
acct-2026200001-1£194,474.90
acct-2026200001-2£107,154.85
acct-2026200001-3−£14,993.29

Recorded runs on this case

  • exactSingle prompt2 steps · 12,903 tokens · Confidence medium

    Model claude-sonnet-4-6Measured 2026-08-20Bench v1.0Run 11eaa71b2d02Commit 3d38c30

  • exactAgent with tools17 steps · 32,895 tokens · Confidence medium

    Model claude-sonnet-4-6Measured 2026-08-20Bench v1.0Run f140aa1e57f4Commit 384d72d

Step through any of these on the demo page.