Error when creating too many playlists?
Youtube API v3 have a limit based on "units"
Daily quota: 1 000 000 units.
*Please, keep in mind that when you perform insert and update operations, they write data and so also return a resource. So the operation of inserting a playlist requires a quota of 50 units for the write operation, and the cost of the returned playlist resource.
Here's a handy quota calulator: https://developers.google.com/youtube/v3/determine_quota_cost
Source: https://elfsight.com/blog/2017/06/youtube-data-api-v3-limits-operations-resources-methods-etc/