@Govind Narain​ can you try below api

curl --location --request PATCH 'https://test.cloud.databricks.com/api/2.0/workspace-conf' \

--header 'Authorization: Bearer REPLACE_TOKEN' \

--header 'Content-Type: application/json' \

--data-raw '{

  "enableTableAccessControl": "true"

}'

for reference go through below one of the discussions posted previously Can Terraform be used to set configurations in Admin / workspace settings? (databricks.com)