Salesforce4U

HI All,  I am going to address common mistake we do while doing customization in client sandbox. M istake-1 We  created one visualforce page(name-testpage) and controller(name-testpageController) for some functionality. To call that page we created one button whose content source is link. We have to provide the link.  let say link is  https://c.ap1.visual.force.com/apex/testpage From link  " https://c.ap1.visual.force.com " this part is known as instance name which differs from org. to org. However this button will work fine in the sandbox but It wont work if we move changes to production because production must be having different instance name. If we click on button in the production it will show error page does not exists .  Remedy for this problem is we will provide link as below. /apex/testpage   (Don't append instance ). Mistake-2   Suppose we created a hyperlink formula field to navigate some visualforce page as belo...