I have installed a server-to-server API package in Salesforce Marketing Cloud. Client id, secret, and endpoint URIs for token auth and SOAP are visible.

Using this info I am trying to setup the SFMC connector in Mulesoft flow, but when testing the connection it always fails with error obtaining access token (404 not found). I assume a lot of people here have this connector setup and running fine. Is there anything special that needs to be configured on SFMC-side?

According to documentation the Authentication Base URI stated under access details for the app in SFMC should be appended with /v2/token like this: *auth.marketingcloudapis.com/v2/token. I have tried a couple of variants but no success. What could be incorrect on SFMC-side?


The correct format for oAuth 2.0 would be https://{{TSE}}.auth.marketingcloudapis.com/v2/token

Does mulesoft support the new oAuth 2.0 authentication method?

Looking at this url its is unclear


You can test by creating an legacy installed package (uncheck the enhanced package)


and make a call to the v1 endpoint


  • The v1 endpoint won't be supported after Aug. 1, 2019: help.salesforce.com/… Apr 19 '19 at 18:55
  • thanks for the reply, keep getting the same error though, i suspect there is some configuration missing on SFMC-side, does this require some sort of IP whitelisting maybe? i cant find any info on the subject Apr 21 '19 at 8:01
  • have you tested the token call in postman?
    – EazyE
    Apr 21 '19 at 22:08
  • hi, just an update to this issue, it actually works requesting the token with Postman, so far so good. One thing I learned though was that for this to work the setting for Client Authentication had to be set to -> "Send client credentials in body" it will not work when it is set to "Send as Basic Auth header"..... Maybe this is why it wont work with Mulesoft? digging a little bit deeper into this now Apr 26 '19 at 9:09

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