Hi,
 
I keep getting an error that states invalid numeric data error. Here is my code:
 
data demo;
   set dbraw.x_dm;
   **Create four new variables**;
   length RPTDT AGERPT AGETHEN 8 SUBJID $20;
   label RPTDT   = "Study Report Date"
         AGERPT  = "Age of Subject aat Time of Report (Yrs)"
         AGETHEN = "Age of Subject at Time of Study (Yrs)"
         SUBJID  = "Subject ID/Age"
;
   RPTDT = mdy (6,28,13);
   format RPTDT mmddyy10.;
   AGERPT = INT((RPTDT - S_BRTHDTC + 1)/365.25);
   AGETHEN = INT((S_ICFDTC - S_BRTHDTC + 1)/365.25);
   SUBJID = catx('-',s_siteid,s_subjid,AGERPT);
run;
 
Here is part of the log:
NOTE: Character values have been converted to numeric values at the places given by: (Line):(Column).
      323:26   324:19   324:30
NOTE: Invalid numeric data, S_BRTHDTC='11AUG1946' , at line 323 column 26.
NOTE: Invalid numeric data, S_ICFDTC='14JAN2013' , at line 324 column 19.
NOTE: Invalid numeric data, S_BRTHDTC='11AUG1946' , at line 324 column 30.
STUDYID=ABC-123 S_DOMAIN=X_DM S_SITEID=1160 S_SUBJID=2576 S_INIT=S-B COUNTRY=USA REGION=USA S_PAGE=1 S_VISDTC=14JAN2013
S_VISIT=SCREENING S_VISITNUM=-1 S_ICFDTC=14JAN2013 S_BRTHDTC=11AUG1946 S_AGE=66 S_SEX=M S_ETHNIC=NOT HISPANIC OR LATINO S_RACE1=
S_RACE2=  S_RACE3=  S_RACE4=  S_RACE5=CHECKED S_RACE6=  S_RACEOTH=  ROW_NO=0 S_STATUS=CDQC REVIEWED S_SDV_STAT=FULL FORM SDV
RPTDT=06/28/2013 AGERPT=. AGETHEN=. SUBJID=1160-2576-. _ERROR_=1 _N_=1