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# NFT Interface

### Request for explanation

* The request method is POST application/json
* Error code description:

  <table data-header-hidden><thead><tr><th width="209">Error code</th><th>Explanation</th></tr></thead><tbody><tr><td>Error code</td><td>Explanation</td></tr><tr><td>800</td><td>SUCCESS</td></tr><tr><td>900</td><td>The system is busy, please try again later</td></tr><tr><td>50003</td><td>NFT does not support swap, please select again</td></tr><tr><td>50004</td><td>Currently does not support the sale of NFT</td></tr><tr><td>50005</td><td>Currently does not support the purchase of NFT</td></tr><tr><td>50006</td><td>The current NFT cannot be purchased as the price does not cover the transaction fee</td></tr><tr><td>999</td><td>This NFT cannot be purchased or sold twice</td></tr></tbody></table>