Using web maps powered by Hosted Feature Services you can rapidly deploy field collection schemas to the field for use with Collector for ArcGIS. You can publish map layers directly from ArcMap that have awesome templates with great forms that include pick lists just the way you modeled them in the geodatabase.
But no matter how much of a GIS rock star you are, you won’t get that schema 100% right the first time. So what do you do when you miss a domain value, template or you misspell a field alias? Your field team is out there, collecting stuff. You can’t republish the service!
Well did you know that you can update the schema without having to republish? It’s true. You can add a domain value, remove a template, update the alias for a field.
Here is a document that shows you How to Update Hosted Feature Service Schemas.