Hello @dileepggdev,
Generally this error means you are not using the correct API credentials. If you are convinced your credentials are correct then take a look at your endpoint. Sandbox credentials will not be valid in the production environment and live credentials will produce this error in the sandbox
Thanks!
@wpgateways Can you please tell me which APP we need to create.Seems to be our client is confused to create the APP.
Hello @dileepggdev,
No, you no need to create APP for that, just grab Credentials from below url.
Obtain Sandbox API Credentials
Obtain Live API Credentials
Let me know if any.
Thanks!
Hello @wpgateways,
I have the same error when clicking on the Check Out button.
ERROR: Security header is not valid.
I have verified my API credentials are correct. Above, what do you mean ‘take a look at your endpoint’? I am not using Sandbox creds.
Thanks very much.
We have direct contact on email, now issue has been resolved.
I’m having the same problem. Re-entered the credentials, removed all sandbox credentials, and it is still giving me the same error.