As per rule 114b, we need to mention customer PAN on invoice copies and I am unable to customize the same in QB. please help

Thanks for posting this concern in the QuickBooks Community, Asha.

I'm more than happy to help you out with adding the PAN for your invoice transactions. To do that, you need to add a custom field that you have to manually fill out when you create invoices.

Follow the steps below:

1. Go to Settings ⚙, then select Custom fields.
2. Select Add custom field.
3. Enter the name of the field, and select All Sales forms 
4. If you want the custom field to appear on printed and delivered forms, enable Print on form. Otherwise, it will only be visible in QuickBooks.
   
5. Select Save.
   

Please visit this forum again for any QuickBooks concerns. I'm also here to help you out if you have additional concerns about customising sales forms in QuickBooks and other tasks. Have a nice week!