The table at right details the validation credentials to be created per appliance and domain. DPAA® will only create a validation credential for any given appliance and domain containing certificate objects actually existing within the appliance and domain.
If all credentials do not contain the exact same certificates, it is because you have not selected all of the certificates from all of the domains from all of the appliances in order to make them identical.
Review the information before selecting "Finish". If this is not as intended, cancel this wizard and change your certificate selections before committing to the creation of the validation credential.