This method is deprecated and has been replaced by POST lists/members/create_all. Please update your applications with the new endpoint.
Adds multiple members to a list, by specifying a comma-separated list of member ids or screen names. The authenticated user must own the list to be able to add members to it. Lists are limited to having 500 members, and you are limited to adding up to 100 members to a list at a time with this method.
Resource URL
Parameters
Providing one of these parameters is required.
A comma separated list of screen names, up to 100 are allowed in a single request.
Example Values: twitterapi,twitter
A comma separated list of user IDs, up to 100 are allowed in a single request.
Example Values: 783214,6253282