Payment Processing Certificate
Obtaining Apple Pay Payment Processing Certificate.
1- Initiating the Process
Log in to your Apple Pay Developer account and go to the Merchant ID that you created. Under Apple Pay Payment Processing Certificate, click Create Certificate.
2- Uploading the CSR
On the next page, choose No and continue.
Then, Upload the CSR (i.e., the Certificate Signing Request) file that you downloaded from the MPGS portal.
3- Download Apple Pay Payment Processing Certificate
Download the resulting file, which is the Apple Pay Payment Processing Certificate file.