What this feature does:

Allows you to toggle between UNPOSTED ASN's, POSTED ASN's, and ALL ASN's.

Screen Shot 1: From PO Main Menu, choose "EASI Interfaces", "System Management", "UCC to Vendor X-Ref", and then highlight the vendor you seek.
Bring up the menu (ALT M), and choose "Automated Ship Notice (ASN)". Highlight the appropriate ASN and toggle with ALT U.
The following screen will display.



After hitting ALT U a second time, the following notice will appear in bottom left of screen.





After hitting ALT U a THIRD time, the following notice will appear.