If you are trying to verify a payment or process an order in Quick Shopping Cart® and receive the Authorize.Net error "This account has not been given the permissions required for this request," you may need to update your merchant account settings. This error may have occurred because you initially set up your merchant account using the Authorize.net ID, and later set up another login under the same account. Adding the additional login automatically switched you to multi-user mode.
Depending on your settings, your account is operating in one of the following modes:
You can verify which mode your account is operating in by checking your security settings in the Authorize.net Merchant Account.
Once the connection is approved, you can process any orders with the permissions error.