Salesforce Production Site API login fine, but Sandbox API login fails

Question

We've got a working salesforce api implementation that gets and sets properly with a production salesforce account. We've recently come across a user that rather than using their production Salesforce to connect to our implementation, has set up a sandbox for a limited trial.

I personally have a sandbox that I can properly connect to. It is not, however, connected to a production salesforce instance.

I'm wondering if the fact that they have a production salesforce instance that they created the sandbox from will affect the API login to the sandbox.

I'm currently receiving a "your salesforce login is incorrect" even though I am absolutely certain the credentials and security token are correct.

If you need any other information, I'll happily include it.

Thoughts?

Answer 1

Login requests for sandbox accounts should goto test.salesforce.com not login.salesforce.com. You should also login through the webapp and look in login history (in setup) that'll sometimes have more information.