Can't be processed since it's attached to a large number of transactions?

I appreciate you for posting this concern, Krky.

May I ask the type of transaction you’re working on? Are you encountering that error message while trying to save the transaction? It would greatly help us if you could provide additional information about this message to find you a fix accurately.

In the meantime, I recommend performing some basic troubleshooting steps to determine if the issue is related to your browser. Your browser's cache and cookies become corrupted, causing problems when accessing websites or opening files and transactions.

Let's start by opening your QuickBooks Online (QBO) account in an incognito window, which will prevent any browsing history from being saved. Below are the relevant keyboard shortcuts for different browser types:

• Google Chrome: Ctrl + Shift + N
• Mozilla Firefox: Ctrl + Shift + P
• Microsoft Edge: Ctrl + Shift + P
• Safari: Command + Shift + N

If the private browsing session works, clear the browser cache so the system can restart. This task is also possible in other supported, up-to-date browsers. Clearing the cache will effectively reset the system, allowing you to address any issues caused by stored cache and cookies.

You might want to check this article to learn how to categorize bank transactions: Categorize online bank transactions in QuickBooks Online.

Let us know if you have other questions about managing your transactions. I’ll be waiting for your response in this thread. Take care.