What status items can be and can't be add for change order creation

Summary:

Business is creating change orders for life cycle phase change or status change for an item. However users are adding some time items which were already the item status in PRODUCTION and also Item Creation Allowed option is disabled for item class. Due to this, change orders are not getting processed and ending up with completed with Error status. What status items can be and can't be add while creating a change order.

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