Need to sync Access Bank account in Lagos Nigeria. We are not able to locate in the list of banks available in quickbooks for sync. Please help.

Thanks for coming back to us, @shanbala99.

Currently, we're unable to merge inventory items in QuickBooks Online. You can only merge non-inventory items and services because these don't have quantities.

Please know that I'm taking this as feedback and submit it to our product engineers. It can be approved if it reaches the number of customers requesting it.
 

To change the item name in all of the invoices, You can update the item name in the Products and Services.

Let me show you how:

1. Go to the Gear icon and then select Products and Services.
2. Find the item and click Edit on the ACTION column.
3. Change the name of the inventory item (please make sure the name isn't the same as other items).
4. Click Save and close.

There the invoices were sent will automatically update the name of the items as well as the saved invoices.

You can refer to this article for more information combining and removing product/service: Remove or merge a product or service.

To merge some accounts, customers, and vendors, you can check this article: How to merge accounts, customers, and vendors. It includes merging accounts with reconciliation reports.

Please tell me if you have additional questions. I'm always here to help you. Take care!