Although standard Open Sales Orders report can be customized, the option to add column specifically with Sales Order Internal ID is not available at the moment. As a workaround or alternate solution might serve a Saved Search which results would be identical to Open Sales Order Report with additional column with internal ID of the transaction.

1. Navigate toLists>Search>Saved Searches>New
2. ClickTransaction
3. Search Title:EnterTitle
4. ClickCriteriatab
5. ClickStandardsubtab
6. Filter:
   • SelectType
     1. Type:Selectany of
     2. SelectSales Order
     3. ClickSet
   • SelectMain Line
     1. SelectYes
     2. ClickSet
   • SelectBilling Status
     1. SelectOpen
     2. ClickSet
7. ClickResultstab
8. Show Totals:EnterCheckmark
9. ClickColumnssubtab
10. ClickRemove all
11. Field:
    Note:For every required field use the drop-down menu to select it and once adjusted click Add if needed. Add more fields as needed.
    • SelectInternal Id
    • SelectType
    • SelectDate
    • SelectDocument Number
    • SelectName
    • SelectAmount Unbilled
    • SelectStatus
12. ClickSave & Run