We received a call from Quickbooks (so they say) and said we have an error code of QB1505 and we may lose all of our data. Has anyone else experienced this before?

Thanks for reaching out to this forum, Brooke.

Please know that our QuickBooks Online support team will only contact customers if a scheduled appointment has been made.

You can also have the call you received checked with the dedicated live support team to confirm if it's legitimate by visiting the Intuit Online Security Center, then clicking Contact Us and selecting Report technical support scams.

At the same time, you can check out this article to learn how to secure your account and protect yourself from any fraudulent activities: Identify suspicious activity, phishing scams, and potential fraud.

Feel free to return to the Community forum if you have additional questions.