> ## Documentation Index
> Fetch the complete documentation index at: https://developer.embedly.ng/llms.txt
> Use this file to discover all available pages before exploring further.

# Customer KYC Upgrade - NIN

> This endpoint enables you to upgrade a customer's KYC using nin

<ParamField query="customerId" type="string" required>
  The unique identifier of the customer whose KYC tier is being upgraded.
  **Example:** `3fa85f64-5717-4562-b3fc-2c963f66afa6` **This is a query
  parameter**
</ParamField>

<ParamField query="nin" type="string" required>
  The unique value of the customer's nin. **Example:** `12345678909` **This is a
  query parameter**
</ParamField>

<ParamField query="verify" type="string" required>
  **Example:** `1` **This is a query parameter**
</ParamField>

<ParamField body="firstname" type="string" required>
  The firstname of the customer as stated against the customer's nin.
  **Example:** `John`
</ParamField>

<ParamField body="lastname" type="string" required>
  The lastname of the customer as stated against the customer's nin.
  **Example:** `Doe`
</ParamField>

<ParamField body="dob" type="string" required>
  The customer's dob. **Example:** "1999-10-27T09"
</ParamField>

<ResponseExample>
  ```json 200 Success theme={null}
  {
    "code": "00",
    "success": true,
    "message": "Completed Successfully",
    "data": {
      "id": 130,
      "applicant": { "firstname": "Bunch", "lastname": "Dillon", "dob": null },
      "summary": {
        "v_nin_check": null,
        "nin_check": {
          "status": "EXACT_MATCH",
          "fieldMatches": { "firstname": true, "lastname": true }
        }
      },
      "status": { "state": "complete", "status": "verified" },
      "nin": {
        "firstname": "Bunch",
        "lastname": "Dillon",
        "middlename": "John",
        "birthdate": "06-01-1974",
        "gender": "m",
        "phone": "08000000000",
        "vNin": null,
        "nin": "63184876213",
        "photo": "/9j/4AAQSk******/wCpiNUFoooEf//Z",
        "residence": null
      }
    }
  }
  ```
</ResponseExample>