Make sure you completed steps to obtain all required certificates.
You will need the follow information:
- Apple certificate your created and downloaded from https://developer.apple.com/account/resources/certificates/list
- X509 pfx file certificate you created and password.
- Pass type identifier.
- Team Identifier ID
Navigate to manage your Mobile Wallet Pass Definition to 'omniPass \ Wallet Pass Definitions' and select Manage next to the pass you want to configure.