Create the file /etc/odbcinst.ini with the following content:
cat > /etc/odbcinst.ini << 'EOF'
[ODBC Drivers]
Teradata Database ODBC Driver 20.00=Installed
[Teradata Database ODBC Driver 20.00]
Description=Teradata Database ODBC Driver 20.00
Driver=/opt/teradata/client/20.00/lib64/tdataodbc_sb64.so
EOF