ID Generator Field is used to produce a running number based on an Environment variable. To learn more about its usage, refer to Generate Reference ID.

Figure 1: ID Generator Field

Figure 2: ID Generator Field Properties
| ID: | Element ID |
| Label | Element Label |
| Environment Variable Name | Name of the environment variable to be used to keep the running number |
| Format | Determines the pattern of the generated value (e.g., "REF-?????" will yield "REF-00001") |
| Hidden? | Determines if the element should be made visible in the form |
You may map the generated value of this element to a workflow variable.
Read more about Workflow Variables.