After checking my serial number in official website.they are saying
We’re sorry, but this is a serial number for a product that has been replaced. Please check your information and re-enter your serial number. If your information is correct, you may need to contact us.
iPhone 13 Pro, iOS 16
Hi Levixclown,
Based upon the message displayed, you'll need to contact Apple directly to discuss options for this device. You may use the link that you included in your post to find the best support number to reach them, or Get Support to check for other contact options.
Regards.
That message indicates that the device you have was replaced by Apple as defective and not returned to Apple as required, or because it was reported lost or stolen in transit. No service is available for that device.
Assuming you purchased it used, return it and get your money back.
Serial number issue
