### financial_account_token

- **uuid**  
  *required*  
  Globally unique identifier for financial account.

- **account_number**  
  *string*

### Response Codes  
- **200**  
   OK

- **400**  
   A parameter in the query given in the request does not match the valid queries for the endpoint.

- **401**  
   |  |  |  |   ---  |  ---  |  |  
   | User has not been authenticated  | Invalid or missing API key  |  
   | API key is not active  | The API key used is no longer active  |  
   | Could not find API key  | The API key provided is not associated with any user  |  
   | Please provide API key in Authorization header  | The Authorization header is not in the request  |  
   | Please provide API key in the form Authorization: [api-key]  | The Authorization header is not formatted properly  |  
   | Insufficient privileges. Issuing API key required  | Write access requires an Issuing API key. Reach out at [lithic.com/contact](/content/contact/index.html)  |  
   | Insufficient privileges to create virtual cards.  | Creating virtual cards requires an additional privilege  |

- **404**  
   The specified resource was not found.

- **422**  
   Unprocessable entity.

- **429**  
   Client has exceeded the number of allowed requests in a given time period.  
   |  |  |  |   ---  |  ---  |  |  
   | Rate limited, too many requests per second  | User has exceeded their per second rate limit  |  
   | Rate limited, reached daily limit  | User has exceeded their daily rate limit  |  
   | Rate limited, too many keys tried  | One IP has queried too many different API keys  |

### Example Request  
```bash
curl --request POST \
     --url https://sandbox.lithic.com/v1/financial_accounts/financial_account_token/register_account_number \
     --header 'accept: application/json' \ 
     --header 'content-type: application/json' \ 
     --data '\n{\n  "account_number": "string"\n}\n' 
```

### Click `Try It!` to start a request and see the response here!  
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