STEP 1 Log in to your Apple Developer account with your main Apple ID.
STEP 2 Click on ' Certificates, Identifiers & Profiles '
STEP 3 Click on ' Identifiers ' , Click on your App from the list.
STEP 4 Scroll down to Push notification & press Edit
STEP 5 Click on ' Revoke' for both "Development SSL Certificate " and " Production SSL Certificate"
STEP 6 Click ' Done'