You can create a lookup condition based on the information in the ServiceNow source on the Field Mapping page of the synchronization task wizard. A lookup returns values from the ServiceNow source field based on the configured lookup condition.
When you create a lookup condition, you can define the following components:
•Lookup connection and object. The connection and object to use to perform the lookup.
•Source and lookup fields. The fields used to define the lookup condition. The synchronization task compares the value of the source field against the lookup field and then returns a value based on the match. You can define multiple conditions in a lookup.
For example, you define the following conditions for a lookup: