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fx_conversion

fx_conversion-2026200003

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 282
<?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-2026200003-2-2025-04-30</MsgId>
<CreDtTm>2025-04-30T23:59:00+00:00</CreDtTm>
</GrpHdr>
<Stmt>
<Id>acct-2026200003-2</Id>
<ElctrncSeqNb>1</ElctrncSeqNb>
<CreDtTm>2025-04-30T23:59:00+00:00</CreDtTm>
<FrToDt>
<FrDtTm>2025-04-01T00:00:00+00:00</FrDtTm>
<ToDtTm>2025-04-30T23:59:59+00:00</ToDtTm>
</FrToDt>
<Acct>
<Id>
<IBAN>GB85LBEN36466224235359</IBAN>
</Id>
<Ccy>GBP</Ccy>
</Acct>
<Bal>
<Tp>
<CdOrPrtry>
<Cd>OPBD</Cd>
</CdOrPrtry>
</Tp>
<Amt Ccy="GBP">169970.54</Amt>
<CdtDbtInd>CRDT</CdtDbtInd>
<Dt>
<Dt>2025-04-01</Dt>
</Dt>
</Bal>
<Ntry>
<Amt Ccy="GBP">4656.28</Amt>
<CdtDbtInd>DBIT</CdtDbtInd>
<Sts>BOOK</Sts>
<BookgDt>
<Dt>2025-04-04</Dt>
</BookgDt>
<ValDt>
<Dt>2025-04-04</Dt>
</ValDt>
<AcctSvcrRef>acct-2026200003-2-t011</AcctSvcrRef>
<NtryDtls>
<TxDtls>
<RmtInf>
<Ustrd>SO BRAMBLE LOGISTICS REF573609</Ustrd>
</RmtInf>
</TxDtls>
</NtryDtls>
</Ntry>
<Ntry>
<Amt Ccy="GBP">14319.74</Amt>
<CdtDbtInd>DBIT</CdtDbtInd>
<Sts>BOOK</Sts>
<BookgDt>
<Dt>2025-04-04</Dt>
</BookgDt>
<ValDt>
<Dt>2025-04-04</Dt>
</ValDt>
<AcctSvcrRef>acct-2026200003-2-t023</AcctSvcrRef>
<NtryDtls>
<TxDtls>
<RmtInf>
<Ustrd>SO OSPREY LEASING REF741501</Ustrd>
</RmtInf>
</TxDtls>
</NtryDtls>
</Ntry>
<Ntry>
<Amt Ccy="GBP">2526.47</Amt>
<CdtDbtInd>DBIT</CdtDbtInd>
<Sts>BOOK</Sts>
<BookgDt>
<Dt>2025-04-06</Dt>
</BookgDt>
<ValDt>
<Dt>2025-04-06</Dt>
</ValDt>
<AcctSvcrRef>acct-2026200003-2-t018</AcctSvcrRef>
<NtryDtls>
<TxDtls>
<RmtInf>
<Ustrd>SO JUNIPER PAYROLL REF453071</Ustrd>
</RmtInf>
</TxDtls>
</NtryDtls>
</Ntry>
<Ntry>
<Amt Ccy="GBP">1453.94</Amt>
<CdtDbtInd>CRDT</CdtDbtInd>
<Sts>BOOK</Sts>
<BookgDt>
<Dt>2025-04-06</Dt>
</BookgDt>
<ValDt>
<Dt>2025-04-06</Dt>
</ValDt>
<AcctSvcrRef>acct-2026200003-2-t026</AcctSvcrRef>
<NtryDtls>
<TxDtls>
<RmtInf>
<Ustrd>CR KESTREL INSURANCE REF358007</Ustrd>
</RmtInf>
</TxDtls>
</NtryDtls>
</Ntry>
<Ntry>
<Amt Ccy="GBP">1330.67</Amt>
<CdtDbtInd>DBIT</CdtDbtInd>
<Sts>BOOK</Sts>
<BookgDt>
<Dt>2025-04-07</Dt>
</BookgDt>
<ValDt>
<Dt>2025-04-07</Dt>
</ValDt>
<AcctSvcrRef>acct-2026200003-2-t002</AcctSvcrRef>
<NtryDtls>
<TxDtls>
<RmtInf>
<Ustrd>FPO HARBOURLIGHT IT REF246262</Ustrd>
</RmtInf>
</TxDtls>
</NtryDtls>
</Ntry>
<Ntry>
<Amt Ccy="GBP">14354.04</Amt>
<CdtDbtInd>CRDT</CdtDbtInd>
<Sts>BOOK</Sts>
<BookgDt>
<Dt>2025-04-09</Dt>
</BookgDt>
<ValDt>
<Dt>2025-04-09</Dt>
</ValDt>
<AcctSvcrRef>acct-2026200003-2-t008</AcctSvcrRef>
<NtryDtls>
<TxDtls>
<RmtInf>
<Ustrd>CR KESTREL INSURANCE REF779631</Ustrd>
</RmtInf>
</TxDtls>
</NtryDtls>
</Ntry>
<Ntry>
<Amt Ccy="GBP">6363.49</Amt>
<CdtDbtInd>CRDT</CdtDbtInd>
<Sts>BOOK</Sts>
<BookgDt>
<Dt>2025-04-10</Dt>
</BookgDt>
<ValDt>
<Dt>2025-04-10</Dt>
</ValDt>
<AcctSvcrRef>acct-2026200003-2-t012</AcctSvcrRef>
<NtryDtls>
<TxDtls>
<RmtInf>
<Ustrd>TFR KESTREL INSURANCE REF760953</Ustrd>
</RmtInf>
</TxDtls>
</NtryDtls>
</Ntry>
<Ntry>
<Amt Ccy="GBP">1855.80</Amt>
<CdtDbtInd>CRDT</CdtDbtInd>
<Sts>BOOK</Sts>
<BookgDt>
<Dt>2025-04-10</Dt>
</BookgDt>
<ValDt>
<Dt>2025-04-10</Dt>
</ValDt>
<AcctSvcrRef>acct-2026200003-2-t028</AcctSvcrRef>
<NtryDtls>
<TxDtls>
<RmtInf>
<Ustrd>FPI BRAMBLE LOGISTICS REF394123</Ustrd>
</RmtInf>
</TxDtls>
</NtryDtls>
</Ntry>
<Ntry>
<Amt Ccy="GBP">8525.15</Amt>
<CdtDbtInd>DBIT</CdtDbtInd>
<Sts>BOOK</Sts>
<BookgDt>
<Dt>2025-04-11</Dt>
</BookgDt>
<ValDt>
<Dt>2025-04-11</Dt>
</ValDt>
<AcctSvcrRef>acct-2026200003-2-t013</AcctSvcrRef>
<NtryDtls>
<TxDtls>
<RmtInf>
<Ustrd>BP GREENHOLM FOODS REF608200</Ustrd>
</RmtInf>
</TxDtls>
</NtryDtls>
</Ntry>
<Ntry>
<Amt Ccy="GBP">5900.77</Amt>
<CdtDbtInd>DBIT</CdtDbtInd>
<Sts>BOOK</Sts>
<BookgDt>
<Dt>2025-04-12</Dt>
</BookgDt>
<ValDt>
<Dt>2025-04-12</Dt>
</ValDt>
<AcctSvcrRef>acct-2026200003-2-t020</AcctSvcrRef>
<NtryDtls>
<TxDtls>
<RmtInf>
<Ustrd>SO BRAMBLE LOGISTICS REF968471</Ustrd>
</RmtInf>
</TxDtls>
</NtryDtls>
</Ntry>
<Ntry>
<Amt Ccy="GBP">12030.78</Amt>
<CdtDbtInd>CRDT</CdtDbtInd>
<Sts>BOOK</Sts>
<BookgDt>
<Dt>2025-04-13</Dt>
</BookgDt>
<ValDt>
<Dt>2025-04-13</Dt>
</ValDt>
<AcctSvcrRef>acct-2026200003-2-t004</AcctSvcrRef>
<NtryDtls>
<TxDtls>
<RmtInf>
<Ustrd>TFR HARBOURLIGHT IT REF689333</Ustrd>
</RmtInf>
</TxDtls>
</NtryDtls>
</Ntry>
<Ntry>
<Amt Ccy="GBP">5026.59</Amt>
<CdtDbtInd>CRDT</CdtDbtInd>
<Sts>BOOK</Sts>
<BookgDt>
<Dt>2025-04-14</Dt>
</BookgDt>
<ValDt>
<Dt>2025-04-14</Dt>
</ValDt>
<AcctSvcrRef>acct-2026200003-2-t006</AcctSvcrRef>
<NtryDtls>
<TxDtls>
<RmtInf>
<Ustrd>CR OSPREY LEASING REF502835</Ustrd>
</RmtInf>
</TxDtls>
</NtryDtls>
</Ntry>
<Ntry>
<Amt Ccy="GBP">7388.41</Amt>
<CdtDbtInd>CRDT</CdtDbtInd>
<Sts>BOOK</Sts>
<BookgDt>
<Dt>2025-04-14</Dt>
</BookgDt>
<ValDt>
<Dt>2025-04-14</Dt>
</ValDt>
<AcctSvcrRef>acct-2026200003-2-t017</AcctSvcrRef>
<NtryDtls>
<TxDtls>
<RmtInf>
<Ustrd>TFR EASTFIELD ENERGY REF703873</Ustrd>
</RmtInf>
</TxDtls>
</NtryDtls>
</Ntry>
<Ntry>
<Amt Ccy="EUR">5533.40</Amt>
<CdtDbtInd>DBIT</CdtDbtInd>
<Sts>BOOK</Sts>
<BookgDt>
<Dt>2025-04-14</Dt>
</BookgDt>
<ValDt>
<Dt>2025-04-14</Dt>
</ValDt>
<AcctSvcrRef>acct-2026200003-2-t029</AcctSvcrRef>
<NtryDtls>
<TxDtls>
<RmtInf>
<Ustrd>DD MOORLAND TELECOM REF831543 | SETTLED IN EUR, CONVERT AT 0.8000 GBP/EUR</Ustrd>
</RmtInf>
</TxDtls>
</NtryDtls>
</Ntry>
<Ntry>
<Amt Ccy="GBP">9123.12</Amt>
<CdtDbtInd>DBIT</CdtDbtInd>
<Sts>BOOK</Sts>
<BookgDt>
<Dt>2025-04-14</Dt>
</BookgDt>
<ValDt>
<Dt>2025-04-14</Dt>
</ValDt>
<AcctSvcrRef>acct-2026200003-2-t030</AcctSvcrRef>
<NtryDtls>
<TxDtls>
<RmtInf>
<Ustrd>BP MOORLAND TELECOM REF403130</Ustrd>
</RmtInf>
</TxDtls>
</NtryDtls>
</Ntry>
<Ntry>
<Amt Ccy="GBP">7801.75</Amt>
<CdtDbtInd>DBIT</CdtDbtInd>
<Sts>BOOK</Sts>
<BookgDt>
<Dt>2025-04-16</Dt>
</BookgDt>
<ValDt>
<Dt>2025-04-16</Dt>
</ValDt>
<AcctSvcrRef>acct-2026200003-2-t005</AcctSvcrRef>
<NtryDtls>
<TxDtls>
<RmtInf>
<Ustrd>BP GREENHOLM FOODS REF725764</Ustrd>
</RmtInf>
</TxDtls>
</NtryDtls>
</Ntry>
<Ntry>
<Amt Ccy="GBP">6847.21</Amt>
<CdtDbtInd>DBIT</CdtDbtInd>
<Sts>BOOK</Sts>
<BookgDt>
<Dt>2025-04-16</Dt>
</BookgDt>
<ValDt>
<Dt>2025-04-16</Dt>
</ValDt>
<AcctSvcrRef>acct-2026200003-2-t027</AcctSvcrRef>
<NtryDtls>
<TxDtls>
<RmtInf>
<Ustrd>SO EASTFIELD ENERGY REF350495</Ustrd>
</RmtInf>
</TxDtls>
</NtryDtls>
</Ntry>
<Ntry>
<Amt Ccy="GBP">8136.74</Amt>
<CdtDbtInd>DBIT</CdtDbtInd>
<Sts>BOOK</Sts>
<BookgDt>
<Dt>2025-04-17</Dt>
</BookgDt>
<ValDt>
<Dt>2025-04-17</Dt>
</ValDt>
<AcctSvcrRef>acct-2026200003-2-t009</AcctSvcrRef>
<NtryDtls>
<TxDtls>
<RmtInf>
<Ustrd>BP EASTFIELD ENERGY REF740926</Ustrd>
</RmtInf>
</TxDtls>
</NtryDtls>
</Ntry>
<Ntry>
<Amt Ccy="GBP">11445.46</Amt>
<CdtDbtInd>CRDT</CdtDbtInd>
<Sts>BOOK</Sts>
<BookgDt>
<Dt>2025-04-17</Dt>
</BookgDt>
<ValDt>
<Dt>2025-04-17</Dt>
</ValDt>
<AcctSvcrRef>acct-2026200003-2-t015</AcctSvcrRef>
<NtryDtls>
<TxDtls>
<RmtInf>
<Ustrd>TFR KESTREL INSURANCE REF106622</Ustrd>
</RmtInf>
</TxDtls>
</NtryDtls>
</Ntry>
<Ntry>
<Amt Ccy="GBP">1297.91</Amt>
<CdtDbtInd>DBIT</CdtDbtInd>
<Sts>BOOK</Sts>
<BookgDt>
<Dt>2025-04-17</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: 79-88-42 39423254
Account reference: acct-2026200003-1
Statement period: 01 Apr 2025 to 30 Apr 2025
Currency: GBP
Opening balance: 30012.86
Date Payment type Details Paid out Paid in
02 Apr 2025 TFR OSPREY LEASING REF964414 2215.45
03 Apr 2025 DD OSPREY LEASING REF255642 13274.50
03 Apr 2025 SO KESTREL INSURANCE REF562682 3300.16
05 Apr 2025 BP CASTLEGATE PROPERTY REF477119 13352.03
09 Apr 2025 DD LARKSPUR TRAVEL REF118371 7426.43
10 Apr 2025 SO DELPHINIUM MEDIA REF530395 2049.65
11 Apr 2025 FPI OSPREY LEASING REF176383 8724.25
13 Apr 2025 SO NORTHGATE CLEANING REF315019 2499.59
16 Apr 2025 CR JUNIPER PAYROLL REF181057 12406.65
18 Apr 2025 FPO FENWICK & PARTNERS REF387476 9650.19
19 Apr 2025 BP GREENHOLM FOODS REF962553 7275.65
22 Apr 2025 DD OSPREY LEASING REF842452 6004.37
22 Apr 2025 FPI CASTLEGATE PROPERTY REF650562 14212.40
24 Apr 2025 DD HARBOURLIGHT IT REF627596 840.93
25 Apr 2025 TFR LARKSPUR TRAVEL REF115809 5400.96
27 Apr 2025 SO FENWICK & PARTNERS REF961375 914.89
28 Apr 2025 TFR OSPREY LEASING REF673638 8245.70
29 Apr 2025 SO IRONBRIDGE TOOLING REF348290 2011.23
29 Apr 2025 BP HARBOURLIGHT IT REF743468 9830.49
29 Apr 2025 CR KESTREL INSURANCE REF621476 5687.29
29 Apr 2025 FPI OSPREY LEASING REF684717 5282.62
rbs_transactions.csvUntouched by this perturbation
"Date","Type","Description","Value","Account Name","Account Number","Ledger Ref"
"01/04/2025","BAL","OPENING BALANCE","41798.26","LEDGERBENCH DEMO LTD","60-60-77 52583388","acct-2026200003-3"
"05/04/2025","DD","DD GREENHOLM FOODS REF575656","-10829.32","LEDGERBENCH DEMO LTD","60-60-77 52583388","acct-2026200003-3"
"05/04/2025","DD","DD CASTLEGATE PROPERTY REF932593","-7164.42","LEDGERBENCH DEMO LTD","60-60-77 52583388","acct-2026200003-3"
"06/04/2025","DD","DD LARKSPUR TRAVEL REF620184","-5497.76","LEDGERBENCH DEMO LTD","60-60-77 52583388","acct-2026200003-3"
"06/04/2025","BP","BP OSPREY LEASING REF442870","-220.47","LEDGERBENCH DEMO LTD","60-60-77 52583388","acct-2026200003-3"
"07/04/2025","SO","SO BRAMBLE LOGISTICS REF727518","-13690.08","LEDGERBENCH DEMO LTD","60-60-77 52583388","acct-2026200003-3"
"10/04/2025","DD","DD CASTLEGATE PROPERTY REF850785","-13046.29","LEDGERBENCH DEMO LTD","60-60-77 52583388","acct-2026200003-3"
"11/04/2025","BP","BP AURORA CONSULTING LTD REF140430","-2790.77","LEDGERBENCH DEMO LTD","60-60-77 52583388","acct-2026200003-3"
"11/04/2025","TFR","TFR OSPREY LEASING REF745231","8313.70","LEDGERBENCH DEMO LTD","60-60-77 52583388","acct-2026200003-3"
"12/04/2025","FPI","FPI NORTHGATE CLEANING REF611168","7803.19","LEDGERBENCH DEMO LTD","60-60-77 52583388","acct-2026200003-3"
"13/04/2025","CR","CR OSPREY LEASING REF546407","3954.92","LEDGERBENCH DEMO LTD","60-60-77 52583388","acct-2026200003-3"
"13/04/2025","SO","SO IRONBRIDGE TOOLING REF819824","-3758.28","LEDGERBENCH DEMO LTD","60-60-77 52583388","acct-2026200003-3"
"14/04/2025","BP","BP HARBOURLIGHT IT REF146903","-12598.47","LEDGERBENCH DEMO LTD","60-60-77 52583388","acct-2026200003-3"
"16/04/2025","CR","CR LARKSPUR TRAVEL REF353077","13046.50","LEDGERBENCH DEMO LTD","60-60-77 52583388","acct-2026200003-3"
"17/04/2025","TFR","TFR GREENHOLM FOODS REF863819","6759.13","LEDGERBENCH DEMO LTD","60-60-77 52583388","acct-2026200003-3"
"18/04/2025","BP","BP GREENHOLM FOODS REF683692","-7796.81","LEDGERBENCH DEMO LTD","60-60-77 52583388","acct-2026200003-3"
"18/04/2025","DD","DD EASTFIELD ENERGY REF901718","-3407.30","LEDGERBENCH DEMO LTD","60-60-77 52583388","acct-2026200003-3"
"18/04/2025","TFR","TFR HARBOURLIGHT IT REF914989","11390.59","LEDGERBENCH DEMO LTD","60-60-77 52583388","acct-2026200003-3"
"19/04/2025","DD","DD OSPREY LEASING REF678176","-5721.54","LEDGERBENCH DEMO LTD","60-60-77 52583388","acct-2026200003-3"
"21/04/2025","FPO","FPO MOORLAND TELECOM REF520567","-1911.68","LEDGERBENCH DEMO LTD","60-60-77 52583388","acct-2026200003-3"
"22/04/2025","DD","DD LARKSPUR TRAVEL REF110802","-12172.59","LEDGERBENCH DEMO LTD","60-60-77 52583388","acct-2026200003-3"
"22/04/2025","FPO","FPO KESTREL INSURANCE REF110666","-9731.57","LEDGERBENCH DEMO LTD","60-60-77 52583388","acct-2026200003-3"
"23/04/2025","FPO","FPO HARBOURLIGHT IT REF476045","-14617.17","LEDGERBENCH DEMO LTD","60-60-77 52583388","acct-2026200003-3"
"24/04/2025","SO","SO OSPREY LEASING REF479326","-6139.77","LEDGERBENCH DEMO LTD","60-60-77 52583388","acct-2026200003-3"
"24/04/2025","TFR","TFR DELPHINIUM MEDIA REF203764","4428.96","LEDGERBENCH DEMO LTD","60-60-77 52583388","acct-2026200003-3"
"26/04/2025","CR","CR LARKSPUR TRAVEL REF565700","7325.82","LEDGERBENCH DEMO LTD","60-60-77 52583388","acct-2026200003-3"
"26/04/2025","SO","SO GREENHOLM FOODS REF527706","-12622.86","LEDGERBENCH DEMO LTD","60-60-77 52583388","acct-2026200003-3"
 

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-2026200003-1£13,758.07
acct-2026200003-2£132,915.24
acct-2026200003-3−£38,896.08

Recorded runs on this case

  • exactSingle prompt2 steps · 14,262 tokens · Confidence medium

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

  • exactAgent with tools21 steps · 62,696 tokens · Confidence medium

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

Step through any of these on the demo page.