The SURVEYREG procedure might issue a Read Access Violation error with CONTRAST and an empty domain
If there is a domain level with all missing values and you specify both a CONTRAST and a DOMAIN statement, PROC SURVEYREG might stop processing and issue the following log messages:
ERROR: An exception has been encountered. Please contact technical support and provide them with the following traceback information:
The SAS task name is [SURVEYREG] ERROR: Read Access Violation in SURVEYREG