Error message: Authorize.Net FDC Merchant ID or Terminal ID is incorrect
There is an issue with your Authorize.Net Merchant Service Provider or with your Authorize.Net account itself. Please report this error to Authorize.Net customer support.
Error message: (123) This account has not been given the permission(s) required for this request
Check if you're using the correct API Login ID for your Authorize.Net account credentials in the Payment settings of your Online Store:
Error message: (99) This transaction cannot be accepted
Check if the Transaction Key you entered in your online store matches the current Transaction Key in your Authorize.Net merchant account.
Error message: (13) The merchant login ID or password is invalid or the account is inactive
Check if the details you entered in your online store match your live Authorize.Net merchant account.
Error message: (14) The referrer, relay response, or receipt link URL is invalid
Edit the Relay Response/Receipt URL in your Authorize.Net merchant account:
Log in to your Authorize.net merchant account.
Go to the Receipt/Response URLs page.
Click Add URL.
Enter https://app.shopsettings.com/authorizenet/STORE_ID (where the STORE_ID is your store account ID that you can see in the store admin, in the bottom left corner) to the URL field.
Click Submit.