You need to install the Microsoft Visual Studio Team Foundation Server [Version] MSSCCI Provider. Here's a link to a 32 bit version for 2012. It translates the MSSCCI calls that PowerBuilder makes into calls that Team Foundation Server understands.
Microsoft Visual Studio Team Foundation Server 2012 MSSCCI Provider 32-bit extension
Disregard the "Visual Studio" in the title. As the page indicates, the provider is for a number of third-party utilities as well, including PowerBuilder.