Guidelines for installing SAP Open Server on the same server with other SAP products.
Use .bat files to ensure that each product is started with the correct SAP Open Server version and environment variables.
SAP recommends that you do not mix versions of SDK for SAP ASE and SAP Open Server in the same directory. For example, do not install SDK for SAP ASE 16.0 in a directory containing Open Server 15.5—in this case, upgrade both SDK for SAP ASE and SAP Open Server to 16.0.