I was creating services under Repairs

Welcome to QuickBooks Community, @usersuperiortechnici. I'm providing details about editing services.

Yes, we can edit existing services within your QuickBooks Online account.
 

We only have to follow these steps to accomplish the tasks:

1. Go to the Sales menu.
2. Within the Product and services tab, find the service you want to update or edit.
3. You can click the Funnel icon and select Service under the Type field. This helps you find the service easily. Then, select Apply.
4. Then, click Edit under the Action column.
5. Make necessary changes.
6. Then, hit Save and close to reflect the new entered details.
   

If you'd like to merge duplicate items or remove unused ones in the future, you can refer to this article for the step-by-step guide: Merge a product or service. It also includes a guide on how to reactivate a produce item.

Additionally, you can easily keep track of your product and service items in QBO. This gives you more detailed financial reports and helps you complete transactions faster. Check this link: Product and service items to QuickBooks Online. It includes topics about getting sales insights using reports.

If you ever need anything else, just let me know anytime. Also, in case you're referring to something else, please inform me by adding a new post below. Take care and stay safe, usersuperiortechnici.