Is there any way to only trigger awaiting approval notification once not multiple times after the document is approved, placed on hold, make some changes, then removed on hold?

The changes that are made have nothing to do with conditions that triggered the approval.

Ex:

• Approval map is setup in SO when an item is discounted 100%, approval is triggered.
• An SO is created and has the above condition met, approval is triggered, notification is sent, then approved by the approver.
• Then the sales user places the order on hold and make changes such as mark a line for PO, add description, etc but discount% remains the same. But when the order is removed from hold, approval notification is sent again.
• This is not a bit anoying especially the approver has approved the order and it’s necessary to make some changes to the order again.