This error typically happens only with older users of Authorize.net. Newer Authorize.net accounts typically come with this feature automatically enabled, but older accounts will require you to enable it.
You will need to enable Customer Information Manager (CIM) in your Authorize.net account so that PayKickstart can push the payment over to Authorize.
STEP 1: Login to your Authorize.net account
STEP 2: Click Tools >> Customer Information Manager (see screenshot below)
STEP 3: Click the “Sign up for Customer Information Manager (CIM) Now
STEP 4: On the next screen, read the agreement and then Agree to the Terms of Service.
That’s it! After enabling, this error message should disappear.