Leads are members of a Marketo Program that is synced with a SFDC campaign, but there are some leads that have not synced to SFDC.
This is generally caused by a Salesforce Sync Error
1.) In Notifications, check for the subject 'Salesforce Sync Error: Unable to Add Leads to Campaigns'. This will list the details of the SFDC Error and a list of sample leads along with the Salesforce campaign that they failed to sync to
Example error: INSUFFICIENT_ACCESS_ON_CROSS_REFERENCE_ENTITY: insufficient access rights on cross-reference id
Sample Leads: Salesforce Campaign
firstname.lastname@example.org Campaign name
email@example.com Campaign name
2.) Once the details are collected, contact your Salesforce admin for further troubleshooting.
Here below are example articles that help address the example SFDC error above:
Who This Solution Applies To
Customers using Marketo with Salesforce integrated