# PayIn — Create order

```
POST /PayInMobileMoney/PayInMobileMoney
```

Initiates a Mobile Money debit against a customer's wallet.

## Request

**Body**

| Field           | Type   | Required | Description                             |
| --------------- | ------ | -------- | --------------------------------------- |
| `externalID`    | string | yes      | Unique transaction ID generated by you. |
| `transactionIn` | object | yes      | Transaction details (see below).        |

**`transactionIn` object**

| Field               | Type                        | Required | Description                                                        |
| ------------------- | --------------------------- | -------- | ------------------------------------------------------------------ |
| `firstName`         | string                      | yes      | Customer's first name.                                             |
| `lastName`          | string                      | yes      | Customer's last name.                                              |
| `email`             | string                      | yes      | Customer's email address.                                          |
| `mobileCountryCode` | integer                     | yes      | Numeric country dialing code (e.g., `237` for Cameroon).           |
| `mobileNumber`      | string                      | yes      | Mobile number without country code.                                |
| `description`       | string                      | no       | Free-text description shown on the ledger entry.                   |
| `currency`          | string (ISO 4217)           | yes      | e.g., `XAF`.                                                       |
| `countryCode`       | string (ISO 3166-1 alpha-2) | yes      | e.g., `CM`.                                                        |
| `operator`          | string                      | yes      | Mobile Money operator name (case-sensitive). Validate via Catalog. |
| `amount`            | number                      | yes      | Amount in the minor-agnostic currency unit. For XAF, whole units.  |

## Response

| Field              | Type          | Description                                    |
| ------------------ | ------------- | ---------------------------------------------- |
| `orderID`          | string (UUID) | Nexterpay identifier.                          |
| `externalID`       | string        | The `externalID` you submitted.                |
| `validationStatus` | string        | Initial lifecycle state (typically `Pending`). |

## Example

```bash
curl -X POST "https://api-sandbox.nexterpay.io/PayInMobileMoney/PayInMobileMoney" \
  -H "Authorization: Bearer YOUR_TOKEN" \
  -H "Content-Type: application/json" \
  -d '{
    "externalID": "payin-20260423-000123",
    "transactionIn": {
      "firstName": "Amina",
      "lastName": "Ngono",
      "email": "amina.ngono@example.com",
      "mobileCountryCode": 237,
      "mobileNumber": "670000000",
      "description": "Order #4521",
      "currency": "XAF",
      "countryCode": "CM",
      "operator": "Orange",
      "amount": 100
    }
  }'
```

```json
{
  "orderID": "c9a1f8e0-4b3c-4b9e-8a2d-5e6f7a8b9c0d",
  "externalID": "payin-20260423-000123",
  "validationStatus": "Pending"
}
```


---

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