Campaign and line item Limits, what are they?



Ads accounts are limited to a maximum of 200 active campaigns. This limit can be raised to 4,000 active campaigns manually by the advertiser’s Twitter Account Manager upon request.

An Ads account can have up to 100 line items per campaign, but limited to 4,000 active line items in total.

Related Links:

Relationship between ads object
Ads API Frequently Asked Questions (FAQs)