Register your accounthere
Once you register your PSP Server successfuly with UPI Sandbox
you will be provided with a set of PSP details
like UPI sandbox Endpoint(Api access url), Organization Id(orgId),api key, etc.
With each UPI sandbox user profile a set of Test Accounts will be provided.
Each account contains all the necessary
info to test all available APIs
Requests can be made using tools like postman
With each request an acknowledgement will be provided
and Responses will be sent to the Requestee PSP server
Check your Request logs in the Dashboard