Problems adding users to a list through the API

[idevelop]

I’m working on an app that involves creating a private list and populating it with a large number of users, within the 5.000 limit, and correctly batching the users in chunks of 100 per API call, as requested by the documentation.

Everything worked fine for the first couple of hours, but now the lists/members/create_all request doesn’t seem to do anything. It doesn’t return an error, it just returns the list model itself.

Even more curious, it seems adding people to a list is now broken for me on the Twitter website too. I create a new list, add some people to it, and then after refreshing, the list is empty and the number of members is zero.

Every other API call I’m doing works as expected, and there’s nothing relevant in the rate limits, although I’m not seeing any limits specifically defined for lists/members/create_all.

Here’s a list that I’ve added members to, both through the API and through the browser, however its member count is still at zero even hours later: 1250854769238986752

My app id is 17742191

Any support would be appreciated!

Thanks

[idevelop]

Here are some headers I’m getting as response to the lists/members/create_all API call, in case it helps with debugging:

'x-connection-hash': [ '3a785f251d3450bd7d5dd53c14bb53a4' ],
'x-response-time': [ '260' ],
'x-transaction': [ '00f4ccdd00bb9f7d' ],
'x-twitter-response-tags': [ 'BouncerCompliant' ],

[idevelop]

Interesting, if I switch from create_all to create, I’m getting this error, even though it’s my list that I just created through the API.

code: 104,
message: "You aren't allowed to add members to this list."

A similar error can be reproduced through the Twitter website and the iOS app. Seems like my account has gone into a state where I’m not allowed to add users to lists.

Separate from why exactly this error is being triggered, one issue is the inconsistent behaviour between create and create_all