Follow-up from this conversation: - https://gitlab.com/gitlab-org/customers-gitlab-com/-/merge_requests/11833#note_2325357618 - https://gitlab.com/gitlab-org/customers-gitlab-com/-/merge_requests/11833#note_2325354901 ### Problem 1. We should use system specs to test specific response body content instead of request spec 2. Update stubs/mocks to from request spec to use `SalesforceClient` mock. ### Proposal <!-- Consult with `@gitlab-com/business-technology/enterprise-apps/zuora-architects` on the ~"Enterprise Applications" team if Zuora business logic is involved. --> ### Result ### Next steps (if any) ### How will we measure success?