Support for Multi-Select Picklists
A multi-select picklist is a picklist from which the user can select multiple values. In Web Services On Demand, multi-select picklists are only accessible for the following record types:
Account
Activity
Contact
Custom Object 01
Custom Object 02
Custom Object 03
Lead
Opportunity
Service Request
For these record types, all standard and custom multi-select picklist fields are accessible. You can add, remove, replace or query selections in parent-level multi-select picklist fields, however child-level multi-select picklist fields are not supported.
Input and output values are language-independent code (LIC) delimited, but the multi-select picklist delimiter is always a semicolon regardless of locale for input and output: <LIC1>;<LIC2>.