Adobe Target API error - VersionConflict.Resource - Cannot delete activity with options in this version of API

[#1]

Hello!

I've been trying to do a cleanup in our Dell Target activities. Here's the request I'm doing:

                       var options = {

                            url: 'https://mc.adobe.io/{tenant}/target/activities/xt/' + activity.id,

                            method: 'DELETE',

                            headers: {

                                'Content-Type': 'application/vnd.adobe.target.v3+json',

                                'Authorization': 'Bearer ' + bearerToken + '',

                                'cache-control': 'no-cache',

                                'X-Api-Key': clientId

                            }

                        };

This is the response I'm getting:

ERROR: Check the log for more info: {"httpStatus":409,"requestId":"{hidden for security reasons}","requestTime":"2020-11-03T18:51:47.053Z","errors":[{"errorCode":"VersionConflict.Resource","message":"Cannot delete activity with options in this version of API"}]}

I'm not sending any options. This is happening on over 300 activities. Could you help me out figuring out how to do it?

I'm able to remove offers and audiences just fine. Only activities is not working.

Thank you in advance!

[#2]

Does application/vnd.adobe.target.v2+json work?