When a faulty or otherwise incorrect product is replaced, please note that you'll receive either an e-receipt, which is a sales receipt sent electronically via email (applicable to private/consumer customers) or a tax invoice (applicable to business customers).
We have to send an e-receipt/tax invoice if we issue replacement products, for our records. It's a business requirement to acknowledge such transactions.
Please note that you do not need to do anything, no action is required. The paperwork is simply for your records.