We can configure AD LDAP from UI but in case you are looking to configure Identity Source using the command then following is the procesure.

• Login to VCSA over SSH
• Switch to shell
• Navigate path /opt/vmware/lib64/
• In case required, you can take a backup of the existing configuration by copying file “/opt/vmware/lib64/vmware-identity-sso-config.jar”
• Next, you can run the following command to create an identity source
• sso-config.sh -add_identity_source -type adldap -baseUserDN "CN=Users,DC=example,DC=com" -baseGroupDN "CN=Groups,DC=example,DC=com" -domain "example.com" -alias "EXAMPLE" -username "CN=Administrator,CN=Users,DC=example,DC=com" -password 'password' -primaryURL "ldap://ldap.example.com:389"

  1	sso-config.sh -add_identity_source -type adldap -baseUserDN "CN=Users,DC=example,DC=com" -baseGroupDN "CN=Groups,DC=example,DC=com" -domain "example.com" -alias "EXAMPLE" -username "CN=Administrator,CN=Users,DC=example,DC=com" -password 'password' -primaryURL "ldap://ldap.example.com:389"

• Please update the parameters with the correct values