Hi, i have some problem but i dont know how to implement that in acumatica.

i have some custom field in screen Bill and Adjustments like this picture with highlight.

this is some custom field in screen Shipment with highlight.
my problem is how to get custom field value from screen Shipment to Screen Bill and Adjustments if i copy “CA Shipment Num” in screen shipment to “NO.SJ” in screen bill adjustments and in the system can auto filled value in custom field with highlight in bill and adjustments screen. Thanks.