I want to add an iPhone XS UDID in the Apple developer portal but I am unable to find the UDID in iTunes and without adding the UDID I am unable to run my app on the iPhone XS. I tried adding the ECID and SEID but it didn't work.

I couldn’t find anything about the disappearance of the UDID on Google either.

Can anyone help me figure out how to register the iPhone XS in the Apple developer portal?