JavaScript must be enabled in order to use this site.Please enable JavaScript in your browser and refresh the page. Draft Invoice Entry API Tab This section includes the fields and descriptions for the Draft Invoice Entry API tab. Card Part Island Field Description Instance Key As noted above, the layout shows the three key fields. Invoice Editing No. This is the reference to the Invoice Editing Header. Job No. This field shows the number of the job to which the current draft invoice entry pertains. Parent Topic: Draft Invoice Entry API Single Dialogs Workspace