When using Web Services, you need to make a unique repository request per record creation, record update, record read, records search, and record deletion operation.
Adding or updating certain record property values can be performed in a batch manner. For example:
•Contact addresses, email addresses, internet addresses
•Contact phone numbers, fax numbers
•Contact rates, relations, skills, territories
•Invoice adjustments
•Invoice line items, and line item adjustments
•Project assignees, relations
•Task assignees