If different versions of tdwallet are installed on the same system, then all versions must be installed at the same prefix. This is to enable all versions of tdwallet installed on the same system to share the wallet data. If tdwallet 17.00 is installed at prefix /abc then the install path will be /abc/teradata/client/17.10. If tdwallet 17.10 is then installed on the same system, the prefix must be the same as the installed 17.00 tdwallet, which implies that the install path for 17.10 tdwallet will be /abc/teradata/client/17.10.