Paypal holding a payment

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Iv just sold a phone on ebay and received this message  » You received a payment of £379.00 GBP from Christine on Thu, 12 Nov 2020. Important Note: Thanks for using PayPal.For safety measures please note that this payment has been approved and deducted from the buyer’s account but will not be credited to your account until the shipment tracking number is sent to us by replying to this email for verification so as to secure both you and the buyer. » Can anyone tell me what to do and if I can reply to the email as I don’t want to post out and not end up with my money?