Required Fields
Required fields in the UI do not necessarily correspond to required fields in SOAP web services. This is because there can be standard defaults that are applied if the field is not populated. For example, in the CalendarEvent record type, the eventAccess field is required in the UI. However, it is optional in SOAP web services because it has a default value of Public.
Important:
The Required column in the SOAP Schema Browser lists T or F (for true or false) to specify if a field is required by the form in the user interface. Refer to the Cardinality column to see whether the XSD imposes a requirement for the field. For information on using the SOAP Schema Browser, see SOAP Schema Browser.