This article applies to:
ML8, MultiStore
PayPal Error: PaymentAction of Authorization is not allowed with Unilateral and Non-Credentialed authentication
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Symptoms
This error is is encountered after returning to the cart following the PayPal payment entry.
Cause
This can be caused by an entry in the AppConfig: PayPal.API.MerchantEMailAddress
Solution
BLANK out the value for the AppConfig: PayPal.API.MerchantEMailAddress which was most likely entered in error, where it is confused with the PayPal.BusinessID email value.
This is the field called "API Email (usually blank):" in the admin console Site Configuration Wizard in version 9 software.
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