INVALID_USER_CREDENTIALS/JSON_EXCEPTION In "PayU" Android Integration

I am tring to integrate payU payment gateway with my ecommerce application. I have a account on test payU with merchant id, key and salt. I am working on this demo application, whe

Solution 1:

From the Payu Documentation,

This error occurs when merchant uses any of the following incorrectly.

• Wrong Key
• Wrong Salt
• Wrong Environment

Please note that ENVIRONMENT should be 1 for test credentials and 0 for live credentials

Answer : Please make sure the test key being used if you are hitting the test environment and vice-versa.