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[]CS-Cart's integration instruction page: CS-Cart Documentation — CS-Cart 4.15.x documentation
[]You just use the “API Login ID” on the config page - NOT your authorize.net test account username.
[]You ust use the “Test (dev)” mode or you will get an account error. (It took me forever to find this out.) “Test” mode does not work.
[]To get your MD5 hash, go to https://sandbox.authorize.net/ Click on “Settings” in the sidebar and look down the page… click on “MD5-Hash” and fill out the form there. You can type ANYTHING into the hash, as long as it matches what you put in the CS-Cart config.
[*]Be sure CURL is enabled on your server: CS-Cart Documentation — CS-Cart 4.15.x documentation
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