Error: 'object could not be found' or 'invalid object name'?

As a Developer i thought you may experience one of two errors frequently, even though you thought the object already exist. The error like below:
Msg 208, Level 16, State 1, Line 1
Invalid object name 'Table/View Name'.

OR

Msg 2812, Level 16, State 62, Line 1
Could not find stored procedure ''.






Solution:
To Avoid Such type of error keep in mind always the following considerations:

1. The