> For the complete documentation index, see [llms.txt](https://apidocs.arionbanki.is/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://apidocs.arionbanki.is/b2b-2013-schema/b2b-services/b2b-payment-service/error-examples.md).

# Error examples

1. **Villuskilaboð: FLYK HBOK**\
   This error occurs when trying to create a batch where the transaction key does not match the account type (ledger). This usually occurs when trying to do a partial payment of a claim within a batch payment.
2. **4402 Notandi á ekki reikningsnúmerið**\
   This error occurs if the withdrawal account does not match the user that is authenticated and using the service.

   <table data-header-hidden><thead><tr><th width="258"></th><th></th></tr></thead><tbody><tr><td>Abbreviations</td><td>Description</td></tr><tr><td>Bank</td><td>Branch ID</td></tr><tr><td>Hbok</td><td>Account type/ledger (Höfuðbók)</td></tr><tr><td>Rnum</td><td>Account number or claim number (Reikningsnúmer)</td></tr><tr><td>Flyk</td><td>Transaction key (Færslulykill)</td></tr><tr><td>Ktal</td><td>National registry ID number (Kennitala)</td></tr><tr><td>Vald</td><td>Valuedate</td></tr><tr><td>Tlyk</td><td>Category code (Textalykill), e.g., 04 = salary</td></tr><tr><td>Slnr</td><td>Bill number (Seðilnúmer)</td></tr><tr><td>Upph</td><td>Amount (Upphæð)</td></tr><tr><td>Tilv</td><td>Reference number (Tilvísunarnúmer)</td></tr><tr><td>Gjdg</td><td>Due date (Gjalddagi)</td></tr></tbody></table>

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