> 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-foreign-statements-service/mapping.md).

# Mapping

The following section describes how data from the web service can be mapped from and to MT940 Swift format.

| **B2B Element**         | **MT940 Tag** |
| ----------------------- | ------------- |
| ReferenceNumber         | 20            |
| *RelatedReference*      | 21            |
| StatementNumber         | 28C           |
| SequenceNumber          | 28C           |
| TransactionDate         | N/A           |
| ValueDate               | 61            |
| EntryDate               | 61            |
| *DebitCreditMark*       | 61            |
| IsPaymentReversed       | 61            |
| *FundsCode*             | 61            |
| Amount                  | 61            |
| Currency                | 61            |
| TransactionType         | 61            |
| CustomerReference       | 61            |
| BankReference           | 61            |
| ClosingBalance          | 62A           |
| Description             | 86            |
| InterimBalance          | 62F or 62M    |
| ClosingAvailableBalance | 64            |
| ForwardAvailableBalance | 65            |
| ExtraDescription        | 86            |
| TransactionData         | 20 - 65       |

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