Handling Duplicate Work Items

Hello,

I have a scenario where when I create a Sales Order, the Work Item will be sent to the approver. But even before the Approver accesses the Work Item, if I've changed the SO, then another Work Item is triggered. Could you please let me know which Work Item would be available for the approver to action on? Would it be both of only one of them? Please let me know. Thanks.

Regards,

Venkata Phani Prasad K