When migrating 32-bit PowerBuilder applications to a 64-bit architecture, you need to consider many factors. Some of the key things to consider is the development environment, unsupported features, and deployment differences. In other words, it is prudent to do a technical feasibility enhancement of such migration before you really begin.

In performing such assessment, it is vital that developers knowledgeable about the source code of the application carefully go through the code to identify the issues.