[DEV] fixed exception handler for 412

atms-api/src/main/java/pwc/taxtech/atms/exception/PreconditionFailedException.java

 package pwc.taxtech.atms.exception;
 
+import org.springframework.http.HttpStatus;
 import org.springframework.http.ResponseEntity;
 
 public class PreconditionFailedException  extends ApiException {
@@ -21,6 +22,6 @@ public class PreconditionFailedException  extends ApiException {
 
     @Override
     public <Object> ResponseEntity handle() {
-        return ResponseEntity.notFound().build();
+        return ResponseEntity.status(HttpStatus.PRECONDITION_FAILED).build();
     }
 }
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