The version of Rational® ClearQuest® clients that run in your environment can affect your choice of a data code page. Previous versions of Rational ClearQuest do not support all the code pages that version 7.0 supports, and versions earlier that 2002.05.02 do not support the data code page functionality at all.
A user running a version of the product prior to version 2003.06.00 cannot update directly to Version 7.0.