I cant transfer music from iTunes to my new iPhoneXr, why?

Jim_homesk290 Said:

"I cant transfer music from iTunes to my new iPhoneXr, why? I have a new iPhone Xr, and restoed it from my iPhone 8 from iTunes on my PC desk top, but i cant transfer my music to my phone. I'm wondering why that is?"

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View This Site: If Songs are Missing from your Music Library After you turn on Sync Library - Apple Support

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Start with this Apple support article—>Sync your iPhone, iPad, or iPod using your computer - Apple Support

What's the exact issue? You get an error or what's happening?