Guidelines for Updating ABC Assignments
If you're not satisfied with the class into which an item falls as a result of the automatic ABC assignment process, you can change it.
For example, assume you compiled your ABC analysis based on historical usage value. You have a relatively new item in your inventory that was ranked lower in your ABC Classification Set Items report since it has very little transaction history on record. Therefore, after the assignment process, this item was assigned to a class of low rank. However, you know that in the future, this item will have a high usage value and should really be classified as a high rank item. You use the Update ABC Assignments page to reclassify this item to now be a high rank item.
You can also update an ABC group to include those items that weren't a part of the initial ABC classification set. You can expand the scope of your existing ABC classification sets without having to rerun any processes. For example, if you start stocking a new item in your inventory, you can make it a part of your existing ABC groupings through the update process. Otherwise, you would have to start all over by recompiling your ABC analysis and reassigning your items to ABC classes. With the whole process starting from the very beginning, you also run the risk of losing any changes you might have made to your item assignments.