Create Unique ID per Form Submitted

Question

I'm looking to create a unique ID for each Form submitted. I'm using SharePoint Online.

The format is ["AN"-YY#####]

First form would look like: AN-1900001

Answer 1

You can activate the Document ID service site collection feature and configure the Document ID setting for static text and format(from site collection settings page >site collection administration >document ID settings)....

More about this : https://www.c-sharpcorner.com/UploadFile/40e97e/document-id-service-in-sharepoint-2013/

If you want to customize this more dynamic way.... you can create another calculated column based on this document id column or can create sample workflow using MS Flow or Nintex.