Item in order mode can not be voided

Item in order mode can not be voided

Environment:

iVend Retail 6.6 8929

Problem Statement:

During Special Order as the scenario customer wants to change the items in their Special Order but when we try remove the item in the Special Order and add the new item then below  Error message " showing  item in order mode can not be voided "


Symptoms:

Can not Change the items  while  Special Order edit  process

Resolution/Work Around:

 For solving this issue, we suggested that at the time of special order edit you cannot void item, but you can make quantity 0 for that item with -edit  button

Refer attached screenshot