There is a need to setup the Cloud Transport Management Service for a CPI landscape. Similar error is shown after hitting the Transport button in CPI to export the Artifacts:
Error: TMS content import call to [https://<host>.hana.ondemand.com/v2/files/upload] failed with code  and body [Unauthorized]#
SAP Transport Management Service
TransportManagementService, Service Keys, uri, TMS content import call to failed with code  and body [Unauthorized]# , KBA , BC-CP-LCM-SRV , Service to export / import apps (MTA-based) , Problem
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