> ## 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.

# Zambia NRC (tax register)

> Verifies that a Zambian National Registration Card (NRC) number belongs to the named taxpayer in the Zambia Revenue Authority register. The register holds the taxpayer's full name only, so the name is the one field compared. Authoritative real-time identity lookup for Zambia. Real-time lookup, pay-per-call.

<div hidden data-didit-db-validation-defaults="{&#x22;issuing_state&#x22;:&#x22;ZMB&#x22;,&#x22;services&#x22;:&#x22;zmb_national_id&#x22;,&#x22;national_id&#x22;:&#x22;123456/78/9&#x22;,&#x22;first_name&#x22;:&#x22;John&#x22;,&#x22;last_name&#x22;:&#x22;Doe&#x22;,&#x22;vendor_data&#x22;:&#x22;user-1234&#x22;}" />

Verifies that a Zambian National Registration Card (NRC) number belongs to the named taxpayer in the Zambia Revenue Authority register. The register holds the taxpayer's full name only, so the name is the one field compared. 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:** —
* **Country:** Zambia
* **Service ID:** `zmb_national_id`
* **Data domain:** Identity
* **Category:** TaxRegistry

## Inputs

| Field | Required | Example |
| - | -: | - |
| `national_id` | Yes | `123456/78/9` |
| `first_name` | Yes | `John` |
| `last_name` | Yes | `Doe` |
| `vendor_data` | No | `user-1234` |

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

## Body parameters

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

  Example: `ZMB`
</ParamField>

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

  Example: `zmb_national_id`
</ParamField>

<ParamField body="national_id" type="string" required default="123456/78/9" placeholder="123456/78/9">
  National identity number for this service.

  Example: `123456/78/9`
</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="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

* `national_id` must use uppercase letters.
* `national_id` must match `\d{6}/?\d{2}/?\d`.

## 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=ZMB" \
    -F "services=zmb_national_id" \
    -F "vendor_data=user-1234" \
    -F "national_id=123456/78/9" \
    -F "first_name=John" \
    -F "last_name=Doe"
  ```
</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": "ZMB",
    "match_type": "full_match",
    "validations": [
      {
        "outcome_code": "MATCH",
        "service_id": "zmb_national_id",
        "service_name": "Zambia NRC (tax register)",
        "source_data": {
          "first_name": "John",
          "full_name": "John Doe",
          "identification_number": "SAMPLE-ID-12345",
          "last_name": "Doe",
          "registration_status": "sample_value"
        },
        "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": "ZMB",
    "match_type": "partial_match",
    "validations": [
      {
        "outcome_code": "PARTIAL_MATCH",
        "service_id": "zmb_national_id",
        "service_name": "Zambia NRC (tax register)",
        "source_data": {
          "first_name": "John",
          "full_name": "John Doe",
          "identification_number": "SAMPLE-ID-12345",
          "last_name": "Doe",
          "registration_status": "sample_value"
        },
        "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": "ZMB",
    "match_type": "no_match",
    "validations": [
      {
        "outcome_code": "NO_MATCH",
        "service_id": "zmb_national_id",
        "service_name": "Zambia NRC (tax register)",
        "source_data": {
          "full_name": "NO_MATCH",
          "identification_number": "NO_MATCH"
        },
        "validation": {
          "full_name": "no_match",
          "identification_number": "no_match"
        }
      }
    ]
  }
  ```

  **`DOCUMENT_NOT_FOUND`** — The submitted document number does not correspond to any record in the registry.

  ```json 200 OK — DOCUMENT_NOT_FOUND theme={null}
  {
    "request_id": "req_01H…",
    "status": "Declined",
    "issuing_state": "ZMB",
    "match_type": "no_match",
    "validations": [
      {
        "outcome_code": "DOCUMENT_NOT_FOUND",
        "service_id": "zmb_national_id",
        "service_name": "Zambia NRC (tax register)",
        "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 `zmb_national_id` currently documents this normalized shape:

* `first_name`
* `full_name`
* `identification_number`
* `last_name`
* `registration_status`

## Pricing & SLAs

Zambia NRC (tax register) 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

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


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