Ensuring compliance with LDhn's e-invoicing requirements is a crucial step, and I appreciate you reaching out about this, @LSW Acct.

Firstly, please know that we don't specifically recommend what type of app to use. However, you can browse our QuickBooks App Store for third-party applications that integrate seamlessly with your QuickBooks account.

Although we can't specify a particular app for LHDN's requirements, here's how you can find the right tools:

1. Visit our QuickBooks App Store.
2. Search for e-invoicing or similar keywords to find apps relevant to your needs.
   
3. Review the app details, user ratings, and feedback to help make an informed decision.
4. Contact the app provider for detailed information on their features and compatibility with LHDN's standards.

Once you find an app that suits your needs, test it with a sample invoice to ensure it aligns with LHDN's e-invoicing standard. You can also review their compliance documentation to double-check accuracy.

Additionally, you might want to check out these articles to learn how to manage your invoices:
 

• Set up and send progress invoices in QuickBooks Online
• Send invoice reminders automatically or manually in QuickBooks Online
• Duplicate an invoice or an estimate in QuickBooks Online

Feel free to connect if you have questions about integrating third-party apps or need guidance on other features in QuickBooks. I'd gladly assist you as you explore the best solution for your business.