The data type of tag is string while map is expected.

[hanyouqing]

The expected demo of tag just looks like:

resource "ucloud_instance" "web" {
    ....
    tags = {
        createby = terraform
        service = web
        team = backend
        owner = zhangsan
    }
}

[shawnmssu]

Our tag is also under revision. In the future, the tag will support the form of maps and access IAM authority management.