Hi nisrinaudi@gmail,
Thanks for reaching out to us here. Welcome! QuickBooks Online enables you to enter inventory adjustments, as you feel necessary. However, modifications made to the inventory will have an impact on the company's current assets in the balance sheet as well as the COGS accounts. For this reason, I recommend speaking with an accounting professional for their expertise and best course of action. If you don't have an accountant, we can help you locate a ProAdvisor in your local area.
If you have any other questions, feel free to reach back out. We would be glad to help!