SAS Query - Audit Trail

[scb]

I would like to set the reason change to "ABC", may I know how to put _reason_change_ into the audit trail dataset? Thanks.

LIBNAME test 'D:\TEST';

DATA ACURA test.AUDI;
SET SASHELP.CARS;
IF MAKE EQ 'Acura' THEN OUTPUT ACURA;
IF MAKE EQ 'Audi' THEN OUTPUT test.AUDI;
RUN;

proc datasets lib=test;
audit Audi;
initiate;
USER_VAR _REASON_CHANGE_ $30;
quit;

PROC APPEND BASE=test.AUDI DATA=ACURA;
RUN;

DATA AUDITCHK;
SET test.AUDI(type=audit);
RUN;

DATA CHK;
SET test.AUDI;
RUN;

[ChrisNZ · Accepted solution]

Did you see this message in your log?

WARNING: Variable _REASON_CHANGE_ was not found on DATA file.

This works:

data ACURA 
     TEST.AUDI(drop=_REASON_CHANGE_);
  set SASHELP.CARS;
  _REASON_CHANGE_='ABC';
  if MAKE = 'Acura' then output ACURA;
  if MAKE = 'Audi'  then output TEST.AUDI;
run;
 
proc datasets lib=TEST;
  audit AUDI;
  initiate;
  user_var _REASON_CHANGE_ $30;
quit;
     
proc append base=TEST.AUDI data=ACURA;
run;
 
data AUDITCHK;
  set TEST.AUDI(type=audit);
run;
 
data DATACHK;
  set TEST.AUDI;
run;