Invitation letter to start visa processing

I've known my friend for several years now and I wish to visit Serbia in June hopefully.. when is the right time to receive an invitation letter and start visa processing? Thank you

@mumiahagripina


Hi


I hope you Doing Well.

I'm interested to To visit Serbia What's the Prosidir to Apply for a Visa.


Thanks

Best regards,

Raouf Yousfi