- session_id [xsd:string]
- Your API session id.
- list_id [xsd:int]
- The id of the list whose attribute is being updated.
- attribute_name [xsd:string]
The name of the attribute that’s being updated. This must be either “name”
- attribute_value [xsd:string]
- The new attribute value. If the “name” argument was set to “name”, the list’s new name will be changed to this. If the “name” argument was set to “form_id”, and this list doesn’t already have an opt-in form associated with it, then the list will be attached to the opt-in form specified by this value.