# UpdateUserReference

### Description

Updates the reference identifier for a specific user based on the user `UUID`. The reference is a custom identifier that can be used to link users to external systems.

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```csharp
public static VyTask<VyUserReferenceDto> UpdateUserReference(string userId, VyUpdateUserReferenceRequest reqParams)
```

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**Parameters**

| userId    | string                                                                                                                            | The user \`UUID\` whose \*\*reference\*\* you want to update. |
| --------- | --------------------------------------------------------------------------------------------------------------------------------- | ------------------------------------------------------------- |
| reqParams | [VyUpdateUserReferenceRequest](https://sdk.venly.io/sdk-reference/c-sdk-v3/object-references/wallet/vyupdateuserreferencerequest) | Request data for the operation                                |

**Returns**

VyTask<[VyUserReferenceDto](https://sdk.venly.io/sdk-reference/c-sdk-v3/object-references/wallet/vyuserreferencedto)>\
User's reference updated successfully.
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