Salesforce Integration- Request token failure

[MartechTara1]

Hi - I am trying to integrate my  Marketo sandbox to a salesforce sandbox- once I get to the part to sign into salesforce in Marketo , I get a message:  Request token failure: Any ideas on how to fix this?

[AWmindtree · Accepted solution]

Hi @MartechTara1 

Our team faced the similar issue and we found that it was a SF dev environment not a Sandbox. 
We unchecked the Connecting to Sandbox in Marketo and it worked successfully. 

Hope that helps 🙂

[ktronolone]

Adding my recent experience here for those who might also encounter this issue but are connecting to a true SFDC sandbox. 

When setting up the API user, if your Salesforce admin uses the new username/password to login to SFDC and generate the verification token, Marketo will run into the Request token failure error.

To resolve, reset the user's password in SFDC and then attempt the Login With Salesforce button.