tailored_audiencesdon’t work as other properties do - sending empty string does not clear out existing tailored audiences. Call ends with response OK, 200.
Updating it with new tailored audiences does not work, or deleting (via update) one of two tailored audiences which I added through Twitter create campaign interface does not work. Error code is
message: ""Line item cannot combine positive lookalike criteria with positive retargeting, mobile or list targeting types."
The same action (removing one tailored audience) work on Twitter update campaign page. (it is Promoted Tweets product type). I am aware of this , but still, I am able to add / remove these on ads.twitter.com campaign management.