How to rename an item or Modify Primary UOM of Item in fusion

Problem Description

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Cannot able to rename an item or Modify Primary UOM of Item in fusion.

Objective what we want to achieve:

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We have created an item in Oracle fusion successfully. Created SO with that item. But we want to rename the item name or modify the UOM from system as we found Primary UOM for that item is not correctly specified at the time of item creation.

What we checked:

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Oracle standard is not allowing us to do that any modification in Item name as well as Primary UOM.

Please suggest, how we can do the modification either on Item name or in Primary UOM in fusion cloud. As we already used those item in SO please suggest how we can achieve our target here.