diff --git a/Backend-libXML/main.py b/Backend-libXML/main.py
index 3fd45e5..4d8de0d 100644
--- a/Backend-libXML/main.py
+++ b/Backend-libXML/main.py
@@ -8,18 +8,44 @@ import Parser
 
 app = Flask(__name__)
 
+def process_xml(request, type):
+    start = time.time_ns()
+
+    response = dict()
+    try:
+        request_data = json.loads(request.get_data(as_text=True))
+        xml = request_data['data']
+        xsd = request_data['process']
+        response['result'] = Parser.xsd(xml, xsd)
+        response['status'] = "OK"
+    except KeyError as e:
+        response['result'] = "Missing key: " + str(e)
+        response['status'] = "ERR"
+    except Exception as e:
+        response['result'] = str(e)
+        response['status'] = "ERR"
+    finally:
+        exec_time = (time.time_ns() - start) / 10**6
+        response['time'] = f"{exec_time:.03f}"
+        response['processor'] = "libxml2 over lxml"
+        return json.dumps(response)
+
+
 @app.route("/xpath", methods=["POST"])
 def xpath():
     start = time.time_ns()
-    request_data = json.loads(request.get_data(as_text=True))
-    xml = request_data['data']
-    xpath = request_data['process']
     
     response = dict()
     try:
+        request_data = json.loads(request.get_data(as_text=True))
+        xml = request_data['data']
+        xpath = request_data['process']
         response['result'] = Parser.xpath(xml, xpath)
         response['status'] = "OK"
-    except BaseException as e:
+    except KeyError as e:
+        response['result'] = "Missing key: " + str(e)
+        response['status'] = "ERR"
+    except Exception as e:
         response['result'] = str(e)
         response['status'] = "ERR"
     finally:
@@ -30,36 +56,23 @@ def xpath():
 
 @app.route("/xsd", methods=["POST"])
 def xsd():
-    start = time.time_ns()
-    request_data = json.loads(request.get_data(as_text=True))
-    xml = request_data['data']
-    xsd = request_data['process']
-
-    response = dict()
-    try:
-        response['result'] = Parser.xsd(xml, xsd)
-        response['status'] = "OK"
-    except BaseException as e:
-        response['result'] = str(e)
-        response['status'] = "ERR"
-    finally:
-        exec_time = (time.time_ns() - start) / 10**6
-        response['time'] = f"{exec_time:.03f}"
-        response['processor'] = "libxml2 over lxml"
-        return json.dumps(response)
+    return process_xml(request, "xsd")
 
 @app.route("/xslt", methods=["POST"])
 def xslt():
     start = time.time_ns()
-    request_data = request.get_json()
-    xml = request_data['data']
-    xslt = request_data['process']
 
     response = dict()
     try:
+        request_data = json.loads(request.get_data(as_text=True))
+        xml = request_data['data']
+        xslt = request_data['process']
         response['result'] = Parser.xslt(xml, xslt)
         response['status'] = "OK"
-    except BaseException as e:
+    except KeyError as e:
+        response['result'] = "Missing key: " + str(e)
+        response['status'] = "ERR"
+    except Exception as e:
         response['result'] = str(e)
         response['status'] = "ERR"
     finally: