A graceful way to end a SAS job

I found one possibility to gracefully end a SAS job. The code is rather straight forward. One opens a macro with a condition statement %if %then etc. If the condition is fulfilled, the code may run as previously anticipated. If not, a return statement ends processing the procedure.

%let dsn=work.a;

%macro abortIfRemaining;
  %if (%sysfunc(exist(&dsn))) %then %do;
    --insert data step statements
  %end;
  %else %do;
    %put &dsn not found;
    %return;
  %end;
%mend abortIfRemaining;

%abortIfRemaining;