Answer :
As part of yearly renewal of certificates, Customers should renew the certificates like intermediate, root, and leaf certificates which will communicate with Zuora applications.
Zuora, by policy, publishes the leaf certificate as the chain, which should be necessary and sufficient to ensure your application can communicate with our application. We reserve the right to replace leaf certificates as necessary to maintain our security posture. For this reason, we use only respected Certificate authorities to sign our leaf certificates
Based on above, Zuora will not be able to provide any leaf certificates.
Please refer below knowledge center article regarding Full certification chain
https://knowledgecenter.zuora.com/BB_Introducing_Z_Business/Policies/Full_Certification_Chain
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