I have a doubt in Database project in vs 2015

Hello Prabhu, check below for reference.

https://stackoverflow.com/questions/23588681/cannot-find-the-object-error-when-modifying-schema-for-existing-table 

https://www.sqlservercentral.com/forums/topic/the-specified-schema-name-dbo-either-does-not-exist-or 

https://social.msdn.microsoft.com/Forums/Windowsapps/en-US/3a09d820-4695-4b59-b009-d0805a7c82f8/the-specified-schema-name-either-does-not-exist-or-you-do-not-have-permission-to-use-it

https://dba.stackexchange.com/questions/177262/cannot-find-the-user-because-it-does-not-exist-or-you-do-not-have-permission