The user that integrates Marketing Cloud to Salesforce has been using 20000 API calls per day for a long time. I'm not happy about that but today it used 39,000+ API calls in a morning.

This has blocked revenue generating activities that we have over API.

Why does the MC user cause such a high level of access? The MC admin says that the access should happen Once per 15 minutes but I see 1500 access per day, sometimes many times per minute.

2 Answers 2


Are you not using Marketing Cloud connect? API calls to SF don't count towards any limits if you are.

Assuming you aren't using the connector, the calls can ramp up pretty quickly eg. Sync 6 objects every 15 mins is 24 calls per hour possibly more. Also if tracking data is getting sent back to SF high volume of sends could very easily increase those calls. There could be several other contributing factors here too.


You must make sure you have upgraded to Connected App integration as per this article? https://help.salesforce.com/articleView?id=mc_co_upgrade_to_connected_app_authentication.htm&type=5

API calls made here do not count towards your API limits

  • I don't know - I will look.
    – SeanGorman
    Apr 25, 2019 at 20:51
  • Yes we have used the Connected App.
    – SeanGorman
    Apr 25, 2019 at 20:57
  • 1
    I will suggest you reach out to SF support, as this doesn’t seem to correspond with general documentation Apr 25, 2019 at 21:18
  • @SeanGorman - did you have any luck identifying the root cause? Apr 30, 2019 at 20:38
  • Not yet - I have a case with support but...
    – SeanGorman
    May 1, 2019 at 18:56

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