Structure com.vmware.vcenter.identity.providers.create_spec has a union that is missing a required field for this case: oauth2"args": ["Provided Identity provider type ACTIVE_DIRECTORY_OVER_LDAP is not supported yet."]vCenter Server
The vCenter REST API endpoint POST /api/vcenter/identity/providers does not currently support configuring the ACTIVE_DIRECTORY_OVER_LDAP identity provider type.
There is currently no official REST API method to configure LDAPS. To resolve this issue, configure the LDAPS identity source using one of the following supported methods:
Configure the identity source manually via the vSphere Client UI.
Use the sso-config command-line utility as documented in Broadcom KB 319662.
Alternative Workaround (Community Module): An unofficial, open-source PowerCLI module (VMware.vSphere.SsoAdmin) can be utilized to automate this configuration.
Note: VMware by Broadcom does not take any responsibility for any issues that arise as a result of using this unofficial module.