Want to remove paid water mark on Invoice copy after applying payments in Qyickbooks india version

I've got you covered, Taraka Vankadara.

You can remove this paid watermark by reverting the status of the invoice as unpaid. 

Here's how to revert the status as unpaid:

1. Go to the invoice and click the payment link below the Payment Status Paid in the upper right corner.
2. Then, the date link on when the payment was applied.
3. On the Receive Payment page, click the Clear Payment button.
4. Hit Save and new button once done.

Additionally, I've added this article that'll help you on how to void payments: Void or refund customer payments in QuickBooks Online.
 

I'm always here if you need further assistance with managing invoices. Have a wonderful week.