Hi Cheng,
According to FDA submission data specifications SAS custom formats are not allowed.
SDTM standard does not use any standard SAS formats (with possible exceptions for numeric value formats; e.g., best7., 8.2, etc.).
In addition to numeric values formats, ADaM also utilizes SAS Date/Time formats for analysis Timing variables only.
All those checks will be available in the next OpenCDISC release in Q1 2012. There is no final decission about severity of SAS formats related checks yet.
Thank you,
Sergiy