diff --git a/lib/update_database.py b/lib/update_database.py
index 61a4048..3ec2ea4 100644
--- a/lib/update_database.py
+++ b/lib/update_database.py
@@ -1,8 +1,9 @@
 import argparse
+import configparser
 import os
 import shutil
 import subprocess
-import configparser
+import sys
 
 """
 Dieses Programm:
@@ -52,9 +53,11 @@ def get_rd_dbase(out_dir):
             shutil.copyfile(csv_source_path, csv_destiny_path)
             print("done")
         else:
-            print(f"Can't copy RuleDesigner-database, because output directory ${out_dir} doesn't exist. Check path of %CREMIG_DATA% in cremig_setenv.bat")
+            print(f"Can't copy RuleDesigner-database, because output directory ${out_dir} doesn't exist. Check %CREMIG_DATA% in cremig_setenv.bat")
+            sys.exit(0)
     else:
-        print(f"no such file ${rd_csv_source_dir} of environment variable RD_DATABASE_SOURCE. Check cremig_setenv.bat")
+        print(f"File with ruldesigner-partnumbers ${csv_source_path} doesn't exist. Check VPN connection and %RD_DATABASE_SOURCE% + %RD_DATABASE_NAME% in cremig_setenv.bat")
+        sys.exit(0)
 
 
 def get_sivas_dbase(sivas_id, out_dir):
@@ -70,11 +73,13 @@ def get_sivas_dbase(sivas_id, out_dir):
                 print("done")
             else:
                 print(f"Failure - Couldn't generate {sivas_id}.json. Check for any spelling/typing errors. Otherwise given number is a part without a BOM.")
-                exit()
+                sys.exit(0)
         else:
-            print(f"'Output directory for .json-file {out_dir}' doesn't exist.")
+            print(f"'Output directory for .json-file {out_dir}' doesn't exist. Check cremig_setenv.bat or VPN connection.")
+            sys.exit(0)
     else:
-        print(f"Can't execute SIVAS-database query. Check if you have established a VPN connection to the company's network and check the path of %SIVAS_DATABASE_QUERY% in cremig_setenv.bat")
+        print(f"Can't execute SIVAS-database query. Check VPN connection and check the path of %SIVAS_DATABASE_QUERY% in cremig_setenv.bat")
+        sys.exit(0)
 
 
 if __name__ == '__main__':