You can add, change, or delete fields from the list of
exposed data fields in your roster, queue, or event log definition.
Exposing a field makes it available for use in a search
filter or when defining an index. Adding a data field to the list
of exposed fields does not create the field. The workflow author creates
the data field. In the same way, removing a field from the list of
exposed fields does not delete the field, but it makes the field unavailable
for the listed uses.
Important: Exposing workflow fields
adds to the system overhead, both in space and performance. Additional
performance impact can occur in the following cases:
- Event logs: Exposing workflow fields affects
the transmission of information to Case Analyzer, as well as the size of
the Case Analyzer store and
the performance of Case Analyzer.
- Workflow rosters: Exposing workflow fields that change frequently
can degrade performance. In addition, all fields that you expose are
displayed by default to the user. If an exposed field does not exist
for a particular work item, a default value is displayed.