Adding new inventory item gives invalid as of date error for date in the past

I appreciate you for bringing this to our attention, Luvealiss.

I understand the importance of adding a new inventory item to QuickBooks Online (QBO) to manage your business effectively.

A cache-related issue is likely causing you the inability to add a new inventory item. If this is the case, you can perform some troubleshooting steps. You can use a private or incognito window to rule out cache problems in your browser. Here are the shortcut keys:

• For Mozilla Firefox browser: Ctrl + Shift + P
• For Google Chrome browser: Ctrl + Shift + N
• For Safari browser: Command + Shift + N

Next, go to the QuickBooks Online (QBO) page and try to add an inventory item again. If it works, you can clear your browser's cache. This removes the webpage data that's causing the issue. If a private browser doesn't work, you can use other installed supported browsers as another option.

Once you can add a new inventory item, you can check this article to help you track your inventory: Set up and track your inventory.

Stay in touch with me if there's anything else I can help you with adding a new inventory item in QuickBooks. I'll be right here to provide the information that you need.