In our project we have used Commerce Authorize.Net module. We have not added any discount. No coupons are applied yet still when we proceed to checkout in testing mode we are always getting error as "A valid amount is required.". Our product price is $17.95 and when we get response from Authorize.net we are getting price as $-99.05 and hence payment is declined.
We have also used PayPal for payment method and it is working fine and giving proper amount for same product.
How can we solve this issue?