Tag - E-MapReduce - Alibaba Cloud Documentation Center

Parameter	Type	Description	Example
	object	The tag.
Key	string	The key of the tag. This parameter is required and cannot be an empty string. The key can be up to 128 characters in length. It cannot start with `aliyun` or `acs:` and cannot contain `http://` or `https://`.	department
Value	string	The value of the tag This parameter is optional and can be an empty string. The value can be up to 128 characters in length. It cannot start with `acs:` and cannot contain `http://` or `https://`.	IT