Any and all card numbers declined with response code #3 in sandbox

[mikegar]

Hello,

I've written a service to integrate with Authorize's API.  We are testing using a sandbox account and it is set to live transactions.  No matter what credit card number we've tried we get a decline with code #3 and responsereasoncode of #123.  Even actual card numbers are throwing a #3 declination.  Does anyone have any ideas what could be happening?  I've got to go live with this service by Thursday.

Thanks!

Mike

[RichardH]

Hello @mikegar

Response Code 123 suggest you're using our sandbox login id and password instead of an API Login and Transaction key for authentication.

https://developer.authorize.net/api/reference/responseCodes.html?code=123

Richard

[mikegar]

Hi Richard,

Thanks for the prompt response!  You're right, I am using my sandbox login.  Do I want to use my production login and trankey against the test URL?

Thanks!

Mike

[mikegar]

I used my login and transaction key and I'm still getting an error #3 but the reasoncode is now 13.

[mikegar]

Sorted my issue out by using the proper login credentials for the sandbox.