You saidWhy is my invoice numbers reverting back to already used numbers ? The last one I sent was 1602 so the next one should be 1603 but ist has gone back to 988.

I have a couple of troubleshooting steps to fix the invoice number issue, @Belindad29.

Let's start with logging in to QuickBooks Self-Employed (QBSE) in a private browsing mode to a supported browser, like Google Chrome, since the system doesn't work with your devices. Using an incognito or private browsing mode lets you surf the program (QBSE) without using old internet files, which causes the program to misbehave unexpectedly.

Here's how:

• Ctrl + Shift + N (Google Chrome)
• Ctrl + Shift + P (Firefox)
•  Control + Option + P (Safari)
•  Ctrl + Shift + P (Microsoft Edge)

From there, we can edit the latest invoice with the correct Invoice Number (from 988 to 1603). Before that, let's review the invoices to ensure we won't have to create unnecessary changes. It could be the transaction with Invoice Number 988 is a past invoice. You can check the Invoices menu and click the drop-down arrow beside the Dates header to toggle the time from recent to previous and vice versa.

If you see a duplicate invoice number, edit the latest invoice transaction to correct it by clicking Edit and change the invoice number to the latest (1602). Then save it:

Then follow these additional steps to fix it further:

1. Once done, you'll want to add a new dummy invoice to see if the invoice number is incrementing (from 1603 to 1604).
2. If not, let it be (save it) and then create another invoice to see if it's incrementing.
3. If this works, click the X button on the invoice screen and then delete the dummy invoice. (The dummy invoice duplicates the invoice number. That's why we'll have to delete it to see accurate invoicing data on your Profit and Loss report)
4. Once done, go to your mobile device to uninstall and reinstall the app.
   

   *Install QBSE in iOS device

   *Install QBSE in Android device
   
   

5. Login to the QBSE app and then create an invoice to check if the Invoice No. is incrementing.

If you're logging in previously from a PC device using a browser, I suggest clearing the cache. Doing this can help cleanse the browser and boost its performance while running online applications and services like QBSE. Or try other supported browsers.

If the issue persists, I recommend contacting our QBSE Care Support team. Their tools can help you investigate why your Invoice Number is not increasing. Here's how to reach them:

1. Click on Help (?) and hit Contact Us.
2. Enter your concern regarding the Invoice Number not incrementing.
3. Hit Continue.
4. Choose which way you want to connect with us.

• Have us call you
• Chat with us

Note: If you're using the QuickBooks Self-Employed app, tap the + button and choose Ask QB Assistant. Type in "talk to a human" and then tap Choose which way you want to connect with us.

Just in case, you'll want to process customer earnings online later. You can check the Turn on payments section through this article for the directions: Create invoices in QuickBooks Self-Employed.

Keep in touch if you need extra help with invoices or QuickBooks. I'll make sure to respond as soon as we can. Keep safe.