---
page_title: Change MPIN
product: UPI TPAP SDK
platform: iOS
page_source: https://juspay.io/in/docs/upi-tpap-sdk/ios/headless-process-payloads/change-mpin
llms_txt: https://juspay.io/in/docs/llms.txt
product_llms_txt: https://juspay.io/in/docs/upi-tpap-sdk/llms.txt
---


## Change MPIN



The merchant can call this API to allow a customer to change their UPI Account MPIN


###   Process Parameters



## Request Payload
- **RequestId**:
  - Description: Unique uuid-v4 string
  - Value: Example: abcd-12345-abcd-12345
  - Tags: String, Mandatory
- **Service**:
  - Description: Value: in.juspay.hyperapi
  - Tags: String, Mandatory
- **Payload**:
  - Description: Parameters required to call Hyper SDK API
  - Value:
    - **Action**:
      - Description: Operation to be performed in the SDK.
      - Value: upiChangeMpin
      - Tags: String, Mandatory
    - **UpiRequestId**:
      - Description: Unique identifier (uuid) for the request sent to NPCI
      - Tags: String, Mandatory
    - **AccountReferenceId**:
      - Description: Unique Identifier for the account for which mpin is to be changed
      - Tags: String, Mandatory
  - Tags: JSON, Mandatory


## Response Payload
- **RequestId**:
  - Description: Unique uuid-v4 string
  - Value: Example: abcd-12345-abcd-12345
  - Tags: String
- **Service**:
  - Description: Value: in.juspay.hyperapi
  - Tags: String
- **Payload**:
  - Description: Response Parameters
  - Value:
    - **Action**:
      - Description: Operation performed in the SDK.
      - Value: upiChangeMpin
      - Tags: String, Mandatory
    - **BankAccountUniqueId**:
      - Description: Unique Identifier for bank account across banks
      - Tags: String, Mandatory
    - **AccountReferenceId**:
      - Description: Unique Identifier for the account for which mpin is to be changed
      - Tags: String, Mandatory
    - **BankCode**:
      - Description: IIN Code for the bank
      - Tags: String, Mandatory
    - **CustomerMobileNumber**:
      - Description: masked phone number of the customer
      - Value: <Customer mobile number>
      - Tags: String, Mandatory
    - **CustomerVpa**:
      - Description: VPA of the customer linked to account
      - Tags: String, Mandatory
    - **MaskedAccountNumber**:
      - Description: Account Number with last few digits visible
      - Tags: String, Mandatory
    - **Status**:
      - Description: Status of the API
      - Value: SUCCESS/FAILURE
      - Tags: String, Mandatory
    - **GatewayResponseCode**:
      - Description: Response Code received from NPCI
      - Tags: String, Mandatory
    - **GatewayResponseMessage**:
      - Description: Response Message received from NPCI
      - Tags: String, Mandatory
    - **OtherInfo**:
      - Description: As passed in request
      - Tags: String, Optional
  - Tags: JSON
- **Error**:
  - Description: Possible values :- true/false
  - Tags: Boolean
- **ErrorMessage**:
  - Description: Error Message
  - Tags: String
- **ErrorCode**:
  - Description: Error Code
  - Tags: String
- **Event**:
  - Description: Value: process_result
  - Tags: String





#### Code Snippets: -

#### Java Code Snippet:

```java
{"success":false,"message":"Failed to fetch snippet"}
```

#### Kotlin Code Snippet:

```kotlin
{"success":false,"message":"Failed to fetch snippet"}
```


## Sample Code Snippets:
### Request snippets:

#### Request Code Snippet:

```request
{"success":false,"message":"Failed to fetch snippet"}
```

### Response snippets:

#### Response:
```plaintext
{"success":false,"message":"Failed to fetch snippet"}
```



---

## Complete Code Reference

The following code files are referenced in the steps above:

### InappHeadless1.txt

```
{"success":false,"message":"Failed to fetch snippet"}
```


---

## See Also

- [Set/Reset MPIN](https://juspay.io/in/docs/upi-tpap-sdk/ios/headless-process-payloads/set-reset-mpin)
- [Set Primary Account](https://juspay.io/in/docs/upi-tpap-sdk/ios/headless-process-payloads/set-primary-account)