Is there a way from a workflow to add a field to a list and prompt for its data?
A:
If you are talking SharePoint Designer Workflows, you can't.
You can have a secondary list named "Custom Fields" with "FieldName", "FieldValue", "ItemId" columns and relate them in the workflow using the Current Item Id or something.
F.Aquino
2009-11-25 22:44:36