with enforce shipment set we can prevent pick release line separately but there is no popup message

Summary:

Order has 5 lines and are in shipset1 , requirement is these 5 line to be pick released together so, we have enabled enforce shipment set in manage shipping parameter but, when I perform pick release for line1 only not getting any message why line not pick release , there should be some message or warning to inform user this line is part of shipset

Content (required):

Order has 5 lines and are in shipset1 , requirement is these 5 line to be pick released together so, we have enabled enforce shipment set in manage shipping parameter but, when I perform pick release for line1 only not getting any message why line not pick release , there should be some message or warning to inform user this line is part of shipset