To enable ‘SAVE’ in header document

@TungTran

Your question is not very clear.

When a change is made to the document the save button gets enabled by itself.

If you want to enable the save button programmatically without making change from screen, you can set your graph Primary view as Dirty and it will trigger enabling the Save. Like 

Base.Document.Cache.IsDirty = true;

If you are adding a brand new custom screen and want to have the standard buttons on the top, you will need to add your Primary DAC as the second parameter when you create the graph.

If you want to programmatically press the save button use Base.Save.Press();

That's right. Because the IL department requires information change, after the shipment is confirmed for the transfer type