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-1st we need to go to the item listing and find out what is the item code still tie-ing to the un wanted category.
in this case, assume that the item category we want to delete is NK.
these 3 item is the item tie-ing to the unwanted category NK
in the edit item panel, we need to change the item category to another selected category, in this case we choose NOKIA category
after we save changes, the item code will tie to the NOKIA category instead of NK category anymore.
now we need to go to the EXTENDED ITEM CATEGORIES to delete the NK category that we don’t want to use anymore.
Go to Inventory -> Item Categories -> Extended Categories
In Extended Item Categories panel, we need to generate the report to show the unwanted category position, in case the unwanted category is in Category 2
Then , in the listing ,find the unwanted category and delete it.