---
page_source: https://docs.juspay.io/upi-inapp/android/miscellaneous/sdk-parameters-reference
page_title: SDK Parameters Reference
---


## SDK Parameters Reference



 SDK Common JSON keys - Request / Response


| Key | Type | Description |
|---|---|---|
| requestId | String | A unique randomly generated unique string for triggering any operation on HyperSDK. Usually used to match if response or callbacks are triggered for the same operation. Should be a UUID string. <a href='generating-request-id'>Click here</a> for reference. |
| service | String | A reference to the Juspay product being consumed |
| payload | String | Contains all relevant information required to complete an operation in input or output of an operation in output. |
| error | Boolean | Root key to identify if an operation triggered on SDK was successful or failure. In case of error = true, <a href='../resources/error-codes'>click here</a> for reference. |
| errorCode | String | A set of defined codes for errors triggered for different cases for SDK. <a href='../resources/error-codes'>Click here</a> for reference. |
| errorMessage | String | Details about the error message to help figure out integration or transactional issues. |