If you already validated the sales order window in GESAWI then you can try opening the sales order entry transaction screen (function code: GESSLC), then find the entry transaction you are selecting in your test and click the validate button and see if that resolves your problem. 

If you haven't validated the sales order window do a global validation on the window, then validate the entry transaction and see if that helps. 

That was a good one, but tried it and it still didn't display.

What happens if you

1) Remove the activity code you have,

2) Global validate the OSOH window (GESAWI)

3) Validate the entry transaction. 

Here's the details of a field I added to my SOH2 screen, and it appears after I run through the steps mentioned above:

Hi Delamater,  That worked, thank you!!!!!

Great news. Don't forget to put the activity code back. 

Yep, learned that the hard way.  Patch wiped things out.