What code did you try? Please share the code and the related SAS log output for review/feedback. The SAS support
http://support.sas.com/ has SAS-hosted documentation on SAS/Access for Relational Databases, with specific reference to Teradata -- found with a Google advanced search argument, such as:
access teradata export site:sas.com
Also, there are considerations about your SAS version, OS platform, and other related SAS processing (remote/local) environment.
Scott Barry
SBBWorks, Inc.
What's New in SAS/ACCESS 9.0, 9.1, 9.1.2, and 9.1.3 Interfaces to Relational Databases
http://support.sas.com/documentation/whatsnew/91x/acreldbwhatsnew900.htm