DPAS Priority Rating from SO to WO/PO/Invoicing - Mapping of UDF

We need to track the DPAS (Defense Priorities and Allocations System) Ratings that are entered on Sales Orders and flow this information through to WO's that are generated from SO's, any PO's that are tied to SO's and onto any pack lists, invoice etc.  It's a 4 character text field.

I'd like to setup a UDF in the SO_Header that would then populate through to the other required tables, essentially traveling with the SO Number to be referenced on other forms used down the line.

Is there anyone who is currently handling orders like this or have similar fields flowing through?  Just want some guidance on how to create.  I've looked at a UDF Mapping KB Article and has some direction but not all I'm thinking of, and want to be sure I'm thinking of all tables.

Sage 2016 Standard  5.30.1.0

Thanks,

Greg