Here are the steps to add the customer VAT number in an Invoice:

1. Open the Moon Invoice application on your device or tap on this link.
2. Navigate to Sales ➜ Customer
3. Then, select the customer for whom you want to add the VAT number.
4. Tap the Edit icon, enter the VAT number in the VAT field, and Save.
5. The customer’s VAT number will now appear in the invoice PDF.

5. You can also add the VAT number directly while creating an invoice.

• Click the Edit icon beside the customer details.
• Enter the VAT number and Save.