Thank for the reply. However, I am using PayPal Payments Pro not PayFlow Pro. That said, the Vendor is still required for Payments Pro inside Magento 2, failing to enter a valid vendor returns an invalid authorization response. I have a sandbox account which I have tested by using the Express checkout option and it does properly process to the sandbox business account (I take that to mean the account is valid). That said I am unable to troubleshoot the Payments Pro account without a valid Vendor to go along with the sandbox account. If there are additional steps to getting a sandbox for PayPal Payments Pro are there any instructions available online? Thank you again.
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