After creating an item I realized that I forgot to update the SKU. Is it possible to update the SKU for the item through import ?

Yes, you can overwrite the existing item details by selecting the Overwrite Items option under Duplicate Handling while importing.

Here’s a list of fields that you can overwrite:

• SKU
• HSN
• Description
• Sale Price & Cost Price
• Unit
• Preferred Vendor
• Item Status
• Opening stock & Opening stock rate per unit
• Reporting Tag
• Custom Field
• Default Tax Rate