Salesforce to IFS Integration via Boomi - Apps 10

We’re integrating IFS Apps 10 to Salesforce via Boomi.  We’re finding that the standard APIs as defined in IFS do not contain all of the data elements needed to create or update records in Salesforce and we may be creating custom APIs to achieve our objectives.  Are there other customers who have connected Salesforce to IFS via Boomi?  It would be helpful to know whether you were able to use standard or had to create custom APIs and other helpful lessons learned as we progress in our journey.