Learn to integrate authorize.net as your payment processor.
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Integrating Authorize.net with AuctionNinja
Click here to create an Authorize.net account.
After your account is created, select Account.
After navigating to your account settings, scroll down to Security Settings > API Credentials & Keys.
Copy and paste the API Login ID and the Transaction Key into AuctionNinja.
Click here to login to your seller dashboard.
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Go to Settings
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Under payment processor, select Authorize.net
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Paste the API Login ID and the Transaction Key into the corresponding fields in the AuctionNinja dashboard
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Select Submit
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Test Authorize.net API by inputting a credit card to ensure that the integration was successful