TAO .net client should have the same SP level as ST-TST 300 Add-On on SAP Solution Manager
Steps to Install SAP TAO Client
1. Navigate to http://service.sap.com/swdc --> Support Packages and Patches.
2. Search for SAP TAO 3.0.
3. Install SAP Test Acceleration and Optimization, using the standard Microsoft Windows installer (setup.exe). The installation of a new version will reuse the customized settings, such as connections and options, from the existing version.
4. Follow the instructions in the wizard. 5. Microsoft .net Framework 3.0 or higher is required on your local computer.