The Content API for Shopping now automatically increases your products and accounts quotas as your account grows.
Because your API quota now changes dynamically, we have removed the static chart from our published limits guide . To check your current daily quota and usage, and current per minute quota, you can call the quotas.list 
The following errors are not API quota errors and can’t be resolved by automatic quota increases. They require you to request a quota increase .
too_many_items: Merchant quota exceeded 
too_many_subaccounts: Maximum number of subaccounts reached 
Automatic quota only applies to the products and accounts services. If you need an increased API quota for any other service, or if you’re hitting your daily API quota for the products or accounts services or need a temporary increase for the accounts or products services, contact us  with the following information:
Your Merchant Center ID
 Which methods you’ve reached your quota limits on
 An estimation of how many calls per day you need for those methods
 The reason why you need an increased quota  
Note that our general quota policy  is you should not update your products more than twice per day, and that you should check your accounts and account statuses not more than once per day.
If you have any questions or concerns, please don't hesitate to contact us via the forum .