我下了朱世武的I《SAS编程技术教程》和数据集程序集，但是在9.2里，经常遇到调用数据集，可是无法打开的情况。
LOG显示
WARNING: Some character data was lost during transcoding in the dataset RESDAT.STK000001.
         Either the data contains characters that are not representable in the new encoding or
         truncation occurred during transcoding.
怎样处理才能重新打开啊?