Every time I try to add an invoice to a customer I get the message…Call succeeded but payload is empty

Hi there.

Thank you for bringing this issue to our attention. Let's ensure to add an invoice to your customer successfully in QuickBooks Online, (QBO).

Before we begin, could you please let me know if you've encountered any error messages while creating invoices? This information will help us identify the necessary steps to resolve the issue. If you're using a web browser, I suggest opening your QuickBooks account in incognito mode to help isolate any browser-related issues.

Here are the shortcut keys:

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

Once in incognito mode, try generating a new invoice. If it works, consider clearing your browser's cache and ensure you’re using the latest version of the browser for optimal performance.

However, if your using an app, I suggest clearing the app's cache. By doing so, you can remove historical data and access QuickBooks with a clean state.

Here's how:

iOS

1. Go to Settings, then tap General.
2. Click iPhone Storage, then tap the QuickBooks Online app.
3. Select Offload App.

This will free up the storage without deleting your app's documents and data.

Android

1. Go to Menu ☰, then tap More Options ⋮.
2. Select Settings, then Refresh Data.
3. Click YES to confirm.

If the issue persists after performing the steps mentioned, I recommend deleting and reinstalling the QuickBooks mobile app for a clean start.

Additionally, you can visit this article to learn how to personalize and add specific information to your sales forms, enabling you to create professional-looking invoices, estimates, and sales receipts in QBO: Customize invoices, estimates, and sales receipts in QuickBooks Online.

If you have any more questions or need further assistance with managing your invoices feel free to comment down below. I'll always lend a hand.