Pass the line item guid. CRM_ORDER_READ Get all the Service Contract details. Note: Pass the requested objects to fetch only the required details. This can also be used to get the details of activities/leads/opportunities etc.
CRM_SERVICE_CONTRACTS_HEADER ==> Get the contract item detail
CRM_SERVICE_CONTRACTS_ITEMLIST ==> Get the contract item detail
CRM_SERVICE_CONTRACTS_ITEM_GET ==> Get contract details for IView
CRM_SERVICE_CONTRACTS_SEARCH ==> Function module for the service contracts