$ERR_SDMSERR
591
SDMS error
An problem occurred when using the %ISINFO routine. This could be because a null string was requested but no null string exists for the specified key, or some other %ISINFO error.
591
SDMS error
An problem occurred when using the %ISINFO routine. This could be because a null string was requested but no null string exists for the specified key, or some other %ISINFO error.