Can I transfer the voicemail greeting from my physical SIM card ( Primary line) to my eSIM ( business line) so they are the same?

Hello joplin333,

Thank you for using Apple Support Communities.

We understand that you would like to transfer the voicemail greeting from your personal number on your physical SIM to your business number on the eSIM. The voicemail greeting is set up with your carrier on their servers. You will either need to record the greeting on your business number or you can contact your carrier to see if they can transfer or copy the greeting to the second number.

Best regards.