authorize.net returns error on one-time payment, but the credit card is charged anyway

[romanlutsk37]

Our merchant account was working ok befor e, but a few days ago authorize.net servers started returning the following error, "The merchant login ID or password is invalid or the account is inactive" while processing the one-time payment (https://api.authorize.net/xml/v1/request.api). 

Here's the raw response:

|3|2|13|The merchant login ID or password is invalid or the account is inactive.||P|0|||0.10||auth_capture||||||||||||||||||||||||||3F4805D0D43C89039060BE7BE460B66A|||||||||||||||||||||||||||||||

The merchant login id or transaction key has not changed, so I was wondering what could be going on. 

The most disturbing point is that it seems to charge the credit card anyway. 

Any ideas? 

Thanks a lot,

Roman

[RaynorC1emen7 · Accepted solution]

Question. Does it do it for all one-time payment? How did you know it charge the CC anyway? Did someone change the transactionKey without telling everyone?

Call support. There not much we can help in the forum.

[romanlutsk37]

Thanks for the help. It turned out that the wrong login credentials were used by mistake (those from the test server).