Welcome to the Community, @venusdenosta.
To get an update about the error "Items attached to a large number of transactions cannot be processed", I'd recommend reaching out to our Customer Care Support Team. They can add you to the list of affected users and provide you with progress updates on the situation.
Here's how:
- Log in to your QuickBooks Online account.
- Click the Help (?) icon.
- Choose Contact Us.
- Select a way to connect with us:
- Start a chat with an expert.
- Get a callback from next available support.
In addition, check out this article to help you manage your invoices using the new interface in QBO: Customise invoices, estimates, and sales receipts in QuickBooks Online.
Please let us know if you have further questions or concerns about your invoices or any other transactions inside QBO. We're always here to help. Have a good one.
