In VMware Telco Cloud Automation (TCA), infrastructure management operations fail when targeting a specific vCenter Server instance.
UI or task log errors output: Re-authenticate - operation failed please check details
TCA fails to communicate with or push updates to the designated vCenter deployment.
TCA 3.4.0.1
The secure communication channel and trust relationship between the vCenter Server and Telco Cloud Automation have broken leading to API authentication failures.
To restore communication, the trust infrastructure must be re-initialized and re-authenticated via an exchange of a One-Time Password (OTP) secret and a new TLS handshake.
Refer Tech doc Pairing on TCA-M and TCA-CP to have other pairing options with TCA-CP and TCA-M.