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

# Nigeria National ID (NIMC)

> Verifies data against the National Identity database. Authoritative real-time identity lookup for Nigeria. Real-time lookup, pay-per-call.

<div hidden data-didit-db-validation-defaults="{&#x22;issuing_state&#x22;:&#x22;NGA&#x22;,&#x22;services&#x22;:&#x22;nga_national_id&#x22;,&#x22;first_name&#x22;:&#x22;John&#x22;,&#x22;last_name&#x22;:&#x22;Doe&#x22;,&#x22;national_id&#x22;:&#x22;11111111111&#x22;,&#x22;date_of_birth&#x22;:&#x22;1990-01-01&#x22;,&#x22;vendor_data&#x22;:&#x22;user-1234&#x22;}" />

Verifies data against the National Identity database. Didit exposes this service through `POST /v3/database-validation/` so you can verify the submitted data against the authoritative source and receive normalized match results.

## Coverage

* **Coverage:** \~ 100%
* **Country:** Nigeria
* **Service ID:** `nga_national_id`
* **Data domain:** Identity
* **Category:** NationalIDRegistry

## Inputs

| Field           | Required | Example       |
| --------------- | -------: | ------------- |
| `first_name`    |      Yes | `John`        |
| `last_name`     |      Yes | `Doe`         |
| `national_id`   |      Yes | `11111111111` |
| `date_of_birth` |       No | `1990-01-01`  |
| `vendor_data`   |       No | `user-1234`   |

* **Required inputs:** `first_name`, `last_name`, `national_id`
* **Optional inputs:** `date_of_birth`, `vendor_data`
* **Consent:** Not required
* **Workflow availability:** Available in workflow
* **Coverage:** \~ 100%
* **Price:** \$0.20 per successful query

## Body parameters

<ParamField body="issuing_state" type="string" required default="NGA" placeholder="NGA">
  ISO 3166-1 alpha-3 country code for this database service.

  Example: `NGA`
</ParamField>

<ParamField body="services" type="string" required default="nga_national_id" placeholder="nga_national_id">
  Array containing this service ID. Pinning the service keeps the request scoped to this exact database.

  Example: `nga_national_id`
</ParamField>

<ParamField body="first_name" type="string" required default="John" placeholder="John">
  Given name to validate.

  Example: `John`
</ParamField>

<ParamField body="last_name" type="string" required default="Doe" placeholder="Doe">
  Family name to validate.

  Example: `Doe`
</ParamField>

<ParamField body="national_id" type="string" required default="11111111111" placeholder="11111111111">
  National identity number for this service.

  Example: `11111111111`
</ParamField>

<ParamField body="date_of_birth" type="string" default="1990-01-01" placeholder="1990-01-01">
  Date of birth in `YYYY-MM-DD` format.

  Example: `1990-01-01`
</ParamField>

<ParamField body="vendor_data" type="string" default="user-1234" placeholder="user-1234">
  Your stable user reference for this person, such as your internal user ID. Didit uses it to link standalone checks to the same end user and reduce duplicate-detection noise.

  Example: `user-1234`
</ParamField>

## Input rules & validation notes

* `first_name` must match `[A-Za-zÀ-ÖØ-öø-ÿ .'-]+`.
* `national_id` must contain digits only; remove spaces, hyphens, and punctuation before sending the request.
* `national_id` must be exactly 11 characters long.

## How to call it

<RequestExample>
  ```bash cURL theme={null}
  curl -X POST "https://verification.didit.me/v3/database-validation/" \
    -H "x-api-key: YOUR_API_KEY" \
    -F "issuing_state=NGA" \
    -F "services=nga_national_id" \
    -F "vendor_data=user-1234" \
    -F "first_name=John" \
    -F "last_name=Doe" \
    -F "national_id=11111111111"
  ```
</RequestExample>

<ResponseExample>
  Every successful call returns HTTP `200`. The **`outcome_code`** field tells you what actually happened — distinguishing, for example, a real biometric mismatch (`BIOMETRIC_NO_MATCH`) from a selfie that could not be read (`BIOMETRIC_IMAGE_UNUSABLE`). The `status` shown is the default feature status; your configured [Partial Match / No Match actions](/core-technology/database-validation/database-validation-warnings) can override it.

  **`MATCH`** — The registry confirmed the identity and every checked field matched.

  ```json 200 OK — MATCH theme={null}
  {
    "request_id": "req_01H…",
    "status": "Approved",
    "issuing_state": "NGA",
    "match_type": "full_match",
    "validations": [
      {
        "outcome_code": "MATCH",
        "service_id": "nga_national_id",
        "service_name": "Nigeria National ID (NIMC)",
        "source_data": {
          "first_name": "John",
          "full_name": "John Doe",
          "identification_number": "SAMPLE-ID-12345",
          "last_name": "Doe",
          "name_match_score": "1.000"
        },
        "validation": {
          "full_name": "full_match",
          "identification_number": "full_match"
        }
      }
    ]
  }
  ```

  **`PARTIAL_MATCH`** — The identification number was found but one or more personal fields (usually name or date of birth) did not fully match.

  ```json 200 OK — PARTIAL_MATCH theme={null}
  {
    "request_id": "req_01H…",
    "status": "In Review",
    "issuing_state": "NGA",
    "match_type": "partial_match",
    "validations": [
      {
        "outcome_code": "PARTIAL_MATCH",
        "service_id": "nga_national_id",
        "service_name": "Nigeria National ID (NIMC)",
        "source_data": {
          "first_name": "John",
          "full_name": "John Doe",
          "identification_number": "SAMPLE-ID-12345",
          "last_name": "Doe",
          "name_match_score": "1.000"
        },
        "validation": {
          "full_name": "no_match",
          "identification_number": "full_match"
        }
      }
    ]
  }
  ```

  **`NO_MATCH`** — The registry returned no match for the submitted data.

  ```json 200 OK — NO_MATCH theme={null}
  {
    "request_id": "req_01H…",
    "status": "Declined",
    "issuing_state": "NGA",
    "match_type": "no_match",
    "validations": [
      {
        "outcome_code": "NO_MATCH",
        "service_id": "nga_national_id",
        "service_name": "Nigeria National ID (NIMC)",
        "source_data": {
          "full_name": "NO_MATCH",
          "identification_number": "NO_MATCH"
        },
        "validation": {
          "full_name": "no_match",
          "identification_number": "no_match"
        }
      }
    ]
  }
  ```
</ResponseExample>

## Returned data

The exact fields surfaced in `source_data` depend on what the registry returns. The generated example for `nga_national_id` currently documents this normalized shape:

* `first_name`
* `full_name`
* `identification_number`
* `last_name`
* `name_match_score`

## Pricing & SLAs

Nigeria National ID (NIMC) queries are billed only when Didit receives a conclusive result from the validation source.

* **Per-call price:** \$0.20 USD.
* **Billing:** per successful query. You are not charged when the registry is unreachable, when required fields are missing, or when the request is rejected before reaching the source.
* **Latency:** typical p95 \< 2 s.
* **Availability:** 99.9% per quarter on Didit's side; downstream source availability varies by country and dataset.

## Continue reading

* [Nigeria Database Validation overview](/api-reference/database-validation/nigeria)
* [Database Validation overview](/core-technology/database-validation/overview)
* [Outcome Codes](/core-technology/database-validation/database-validation-outcome-codes)