This table shows the different allowedInput.types and corresponding headers you use to Get a change and Update a change.

allowedInput[].​typeAPI typeDescriptionContent-Type headerAccept header
third-party-csrinfo / GETGet Certificate Signing Request (CSR) for a third-party certificate.N/Aapplication/​vnd.​akamai.​cps.​csr.​v1+json
third-party-cert-and-trust-chainupdate / POSTUpload third-party certificate and trust chain.application/​vnd.​akamai.​cps.​certificate-and-trust-chain.​v1+jsonapplication/​vnd.​akamai.​cps.​change-id.​v1+json