With PayPal's API, are you more likely to receive a "Success" response back if you include the optional address fields?

Question

When using PayPal's API, are you more likely to receive a "Success" response back if you include the address, city, state, etc. fields VS just the required fields (first name, last name)?

Answer 1

It depends mainly on how the merchant account is configured. In the merchant account you have the ability to turn on AVS (Address Validation Service) checking with credit transactions. Typically this compares the street address line 1 and the zipcode with the credit information on file. If this is turned on then definitely it would make a difference whether you pass address fields.