Windows resources of a specific type, must have unique names. The error message is simply telling you that you have two resources of type 3 that share the same name. The solution is to locate the duplicates, and change the name of one of them. Or remove one of them.

Resource type 3 is RT_ICON. So it would appear that you have two icons that share the same name. Apparently, according to the compiler, that name is 1.

Duplicate resource type 3 name 1 when adding an application icon
What is the best data management application for working with oracle db?
