> For the complete documentation index, see [llms.txt](https://docs.payments.thalescloud.io/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.payments.thalescloud.io/xpay-enablement/data-model.md).

# Data model

The Thales TR-TSP API relies on the following data model.

<figure><img src="/files/yJepu5U99Haz4Ci1kTUS" alt=""><figcaption><p>Core identifiers used by the TR-TSP API.</p></figcaption></figure>

| Identifier       | Description                                                                                                                                                                                          | Owner                     |
| ---------------- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | ------------------------- |
| issuerId         | Identifier of the issuer for the FPAN.                                                                                                                                                               | TSH                       |
| cardProductId    | <p>The identifier of the funding card product.<br>This value is not shared with the TSP but is mapped with the 'tokenProductId'.</p>                                                                 | TSH                       |
| cardRefId        | Identifier of the FPAN known by the wallet provider or issuer backend.                                                                                                                               | Wallet Provider or Issuer |
| walletProviderId | Identifier of the wallet provider.                                                                                                                                                                   | TSH                       |
| tokenId          | The token identifier.                                                                                                                                                                                | TSP                       |
| tokenProductId   | Identifier of the token domain.                                                                                                                                                                      | TSP                       |
| tokenStorageId   | <p>Identifier of the element hosting token credentials.<br>For (e)SE it is typically the secure element identifier.<br>For HCE it is typically the identifier of the digital wallet application.</p> | Wallet Provider           |


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