For General: SOAP has GeneralPrimaryContact, GeneralAccountInfo, GeneralAccountAddress, GeneralAccountInfoPhoneType1, GeneralAdditionalAccountInfoPhone1Type, GeneralAdditionalAccountInfoExtRefNbr
For Billing: SOAP has BillingBillToInfo, BillingBillToAddress
For Shipping: SOAP has ShippingShipToInfo, ShippingShipToAddress
Where are these in REST? Do I need to $expand something to have access? What are the names?
Also, what the difference between a MainContact and PrimaryContact?