# Inquire about registration status

> After successfully sending a registration request, the Acquiring Partner (ACQP) can inquire about the registration status from Alipay+ by calling the inquiryRegistrationStatus API.

After successfully sending a registration request, the Acquiring Service Provider (ACQP) can inquire about the registration status from Alipay+ by calling the **inquiryRegistrationStatus** API.

## Processing logic

When using the **inquiryRegistrationStatus** API, the ACQP needs to take the following things into consideration:

-   The ACQP can call the API at a fixed frequency, for example, once a day, to obtain the latest registration status until all the MPPs return the registration results.
-   The ACQP can query the registration result of the corresponding request by specifying the value of _registrationRequestId_, or query the registration result of the corresponding merchant by specifying the value of _registrationMerchantId_.
-   In the response returned by Alipay+, the ACQP can check both the whole registration status of all the MPPs to be registered to, and the registration status of a certain MPP.

For more information about how to use the API (such as the parameter description), see [inquiryRegistrationStatus](../api_acq/inquiry_registration_status).

### Sample

The following samples show the request and response when the ACQP calls the Alipay+ **inquiryRegistrationStatus** API in the Cashier Payment Scenario.

**Request from the ACQP to Alipay+**

```json
{
  "referenceMerchantId": "2188120000190000"
}
```

**Response from Alipay+ to the ACQP**

```json
{
  "result": {
    "resultCode": "SUCCESS",
    "resultStatus": "S",
    "resultMessage": "Success"
  },
  "registrationResult": {
    "registrationStatus": "COMPLETED"
  },
  "pspRegistrationResultList": [{
    "productCodes": [
      "CASHIER_PAYMENT"
    ],
    "pspName": "ALIPAY_CN",
    "registrationResult": {
      "registrationStatus": "APPROVED"
    }
  }]
}
```