diff --git a/app/controller/__init__.py b/app/controller/__init__.py
index aba76f2..bee054c 100644
--- a/app/controller/__init__.py
+++ b/app/controller/__init__.py
@@ -6,7 +6,11 @@ from app.api.cruds.base import create, read, update, delete, read_all
 from app.schema.library import Library
 from ..db.config.config import get_engine_configuration
 
+from sqlalchemy.exc import NoResultFound
+
 from .exceptions import LibraryCreationException
+from .exceptions import LibraryReadException
+from .exceptions import LibraryUpdateException
 
 import logging
 logging.basicConfig(level=logging.DEBUG)
@@ -67,7 +71,8 @@ class LibraryController:
             self._library = libraries[0]
             return True
         return False
-    
+
+    #CRUDS
     def create(self, library:Library):
         try:
             self._library = create(self.session, library)
@@ -76,20 +81,35 @@ class LibraryController:
                 "Cannot create library",
                 f"{e.orig}", 
                 "library",
-                str(library),
-                400
+                str(library)
             )
         return self
     
     def read(self, _id):
-        self._library = read(self.session, _id, Library)
+        try:
+            self._library = read(self.session, _id, Library)
+        except NoResultFound as e:
+            raise LibraryReadException(
+                f"Cannot read Library with id {_id}",
+                f"{e}", 
+                "library",
+                _id
+            )
         return self
     
     def read_all(self):
         self._libraries = read_all(self.session, Library)
         
     def update(self):
-        self.session.commit()
+        try:
+            self.session.commit()
+        except IntegrityError as e:
+            raise LibraryUpdateException(
+                f"Cannot update Library",
+                f"{e}", 
+                "library",
+                None
+            )
 
     def delete(self):
         delete(self.session, self.data)
diff --git a/app/controller/exceptions/__init__.py b/app/controller/exceptions/__init__.py
index 578ba81..ae836af 100644
--- a/app/controller/exceptions/__init__.py
+++ b/app/controller/exceptions/__init__.py
@@ -1,2 +1,5 @@
 from .base import LibraryExceptionBase
-from .exc_01001X_create import LibraryCreationException
\ No newline at end of file
+from .exc_01000X_data import LibraryDataExection
+from .exc_01001X_create import LibraryCreationException
+from .exc_01002X_read import LibraryReadException
+from .exc_01003X_update import LibraryUpdateException
\ No newline at end of file
diff --git a/app/controller/exceptions/base.py b/app/controller/exceptions/base.py
index 8a1add8..d706893 100644
--- a/app/controller/exceptions/base.py
+++ b/app/controller/exceptions/base.py
@@ -1,18 +1,26 @@
 class LibraryExceptionBase(Exception):
-    def __init__(self, code, error):
-        self.code = code
+    def __init__(self, name, error, object_name, data, *, status_code=400):
+        self.code = "000000"
+        self.name = name
         self.error = error
+        self.object = object_name
+        self.data = data
+        self.status_code = status_code
     
     def to_dict(self):
         return {
             "status": "error",
+            "name": self.name,
             "code": self.code,
             "error": self.error,
-            "status_code": 400
+            "object": self.object,
+            "data": self.data,
+            "status_code": self.status_code
         }
     
     def __str__(self):
         return f"ERROR {self.code}: {self.error}"
     
     def __repr__(self):
-        return f"LibraryExceptionBase(code={self.code!r}, error={self.error!r})"
\ No newline at end of file
+        return f"{self.__class__}(code={self.code!r}, error={self.error!r}), " \
+               f"object={self.object!r}, data={self.data!r}, status_code={self._status_code})"
\ No newline at end of file
diff --git a/app/controller/exceptions/exc_01000X_data.py b/app/controller/exceptions/exc_01000X_data.py
new file mode 100644
index 0000000..34908a4
--- /dev/null
+++ b/app/controller/exceptions/exc_01000X_data.py
@@ -0,0 +1,7 @@
+from .base import LibraryExceptionBase
+
+#010010
+class LibraryDataExection(LibraryExceptionBase):
+    def __init__(self, name, error, object_name, data, *, status_code=400):
+        self.code = "010000"
+        super().__init__(name, error, object_name, data, status_code=status_code)
\ No newline at end of file
diff --git a/app/controller/exceptions/exc_01001X_create.py b/app/controller/exceptions/exc_01001X_create.py
index 9101d38..d529dd6 100644
--- a/app/controller/exceptions/exc_01001X_create.py
+++ b/app/controller/exceptions/exc_01001X_create.py
@@ -2,25 +2,6 @@ from .base import LibraryExceptionBase
 
 #010010
 class LibraryCreationException(LibraryExceptionBase):
-    def __init__(self, name, error, object, data, status_code=400):
+    def __init__(self, name, error, object_name, data, *, status_code=400):
         self.code = "010010"
-        self.name = name
-        self.error = error
-        self.object = object
-        self.data = data
-        self.status_code = status_code
-
-    def to_dict(self):
-        return {
-            "status": "error",
-            "name": self.name,
-            "code": self.code,
-            "error": self.error,
-            "object": self.object,
-            "data": self.data,
-            "status_code": self.status_code
-        }
-    
-    def __repr__(self):
-        return f"LibraryCreationException(code={self.code!r}, error={self.error!r}), " \
-               f"object={self.object!r}, data={self.data!r}"
\ No newline at end of file
+        super().__init__(name, error, object_name, data, status_code=status_code)
\ No newline at end of file
diff --git a/app/controller/exceptions/exc_01002X_read.py b/app/controller/exceptions/exc_01002X_read.py
new file mode 100644
index 0000000..564d478
--- /dev/null
+++ b/app/controller/exceptions/exc_01002X_read.py
@@ -0,0 +1,7 @@
+from .base import LibraryExceptionBase
+
+#010030
+class LibraryReadException(LibraryExceptionBase):
+    def __init__(self, name, error, object_name, data, status_code=404):
+        super().__init__(name, error, object_name, data, status_code=status_code)
+        self.code = "010030"
\ No newline at end of file
diff --git a/app/controller/exceptions/exc_01003X_update.py b/app/controller/exceptions/exc_01003X_update.py
new file mode 100644
index 0000000..1668ba1
--- /dev/null
+++ b/app/controller/exceptions/exc_01003X_update.py
@@ -0,0 +1,7 @@
+from .base import LibraryExceptionBase
+
+#010020
+class LibraryUpdateException(LibraryExceptionBase):
+    def __init__(self, name, error, object_name, data, status_code=404):
+        super().__init__(name, error, object_name, data, status_code=status_code)
+        self.code = "010020"
\ No newline at end of file
diff --git a/app/controller/functions/__init__.py b/app/controller/functions/__init__.py
new file mode 100644
index 0000000..4db3f5c
--- /dev/null
+++ b/app/controller/functions/__init__.py
@@ -0,0 +1 @@
+from .update_item_key import update_item_key
diff --git a/app/controller/functions/update_item_key.py b/app/controller/functions/update_item_key.py
new file mode 100644
index 0000000..e20e344
--- /dev/null
+++ b/app/controller/functions/update_item_key.py
@@ -0,0 +1,21 @@
+from ..exceptions import LibraryDataExection
+from ...schema.library import Base
+
+def update_item_key(obj:Base, key, value):
+    if key == "id":
+        raise LibraryDataExection(
+            "id is not updatable",
+            "The key ID is not Updatable",
+            obj.__class__,
+            {key: value}
+        )
+    try:
+        obj.__getattribute__(key)
+    except AttributeError:
+        raise LibraryDataExection(
+            f"{key} not in {obj.__class__}",
+            f"The key {key} is not in {obj.__class__}",
+            obj.__class__,
+            {key: value}
+        )
+    obj.__setattr__(key, value)
\ No newline at end of file
diff --git a/app/routes/__init__.py b/app/routes/__init__.py
index 765664e..599e73f 100644
--- a/app/routes/__init__.py
+++ b/app/routes/__init__.py
@@ -16,6 +16,7 @@ def handle_exception(e):
         "status_code": e.status_code,
         "name": e.name,
         "error": e.error,
+        "data": e.data
     })
     response.content_type = "application/json"
     response.status_code = e.status_code
diff --git a/app/routes/api/library/create.py b/app/routes/api/library/create.py
index 8b9d201..05210e6 100644
--- a/app/routes/api/library/create.py
+++ b/app/routes/api/library/create.py
@@ -1,5 +1,4 @@
 from flask import request
-from sqlalchemy.exc import IntegrityError
 
 from .blueprint import api_library
 
diff --git a/app/routes/api/library/delete.py b/app/routes/api/library/delete.py
index 5b66150..3256c7d 100644
--- a/app/routes/api/library/delete.py
+++ b/app/routes/api/library/delete.py
@@ -12,11 +12,7 @@ logger = logging.getLogger(__name__)
 @api_library.route("/<_id>", methods=["DELETE"])
 def delete_library(_id):
 
-    try: # TODO: function
-        controller = LibraryController(_id)
-    except NoResultFound as e:
-        logger.debug({e})
-        return { "status": "error", "error": "Library not found" }, 404
+    controller = LibraryController(_id)
     
     controller.delete()
      
diff --git a/app/routes/api/library/read.py b/app/routes/api/library/read.py
index 17d68af..977eea0 100644
--- a/app/routes/api/library/read.py
+++ b/app/routes/api/library/read.py
@@ -17,11 +17,5 @@ def read_libraries():
 
 @api_library.route("/<_id>", methods=["GET"])
 def read_library(_id):
-    try:
-        library = LibraryController(_id)
-    except NoResultFound as e:
-        logger.debug(f"No result found for Library wid id {_id}")
-        logger.debug(f"Error {e}")
-        logger.debug(f"Error {dir(e)}")
-        return { "status": "error", "result": "Library not found"}, 404
+    library = LibraryController(_id)
     return { "status": "ok", "result": library.data.to_dict() }, 200
diff --git a/app/routes/api/library/update.py b/app/routes/api/library/update.py
index 179e4cb..98b7070 100644
--- a/app/routes/api/library/update.py
+++ b/app/routes/api/library/update.py
@@ -4,47 +4,24 @@ from sqlalchemy.exc import IntegrityError, NoResultFound
 from .blueprint import api_library
 
 from ....controller import LibraryController
+from ....controller.functions import update_item_key
 from ....schema.library.library import Library
 
 import logging
 logger = logging.getLogger(__name__)
 
-def update_library_item(library:Library, key, value):
-    if key == "id":
-        raise AttributeError("id is not updatable")
-    try:
-        library.__getattribute__(key)
-    except AttributeError:
-        raise AttributeError(f"{key} not in library")
-    library.__setattr__(key, value)
+
 
 @api_library.route("/<_id>", methods=["PATCH"])
 def update_library(_id):
-    try:
-        data:dict = request.json
-        logger.debug(f"data: {data}")
-    except Exception as e:
-        logger.debug(f"{e}")
-        return { "status": "error", "error": "JSON Required" }, 415
-    
-    try: # TODO: function
-        controller = LibraryController(_id)
-    except NoResultFound as e:
-        logger.debug({e})
-        return { "status": "error", "error": "Library not found" }, 404
-    
+ 
+    data:dict = request.json
+    controller = LibraryController(_id)
+   
     library = controller.data
     for key, value in data.items():
-        try:
-            update_library_item(library, key, value)
-        except AttributeError as e:
-            logger.debug(f"Error updating {e}")
-            return { "status": "error", "error": e.name }
-        
-    try:
-        controller.update()
-    except IntegrityError as e:
-        logger.debug(f"DB Error Creating {e}")
-        return { "status": "error", "error": f"{e.orig}" }, 400
-    else:     
-        return { "status": "ok", "result": controller.data.to_dict() }, 200
\ No newline at end of file
+        update_item_key(library, key, value)
+
+    controller.update()
+
+    return { "status": "ok", "result": controller.data.to_dict() }, 200
\ No newline at end of file
diff --git a/config.ini b/config.ini
index 8b56289..eca01e3 100644
--- a/config.ini
+++ b/config.ini
@@ -3,5 +3,5 @@ query = sqlite:///test.db
 
 [App]
 port = 15012
-debug = False
+debug = True
 
diff --git a/test.db b/test.db
index 7618a5b..0baea3a 100644
Binary files a/test.db and b/test.db differ
diff --git a/tests/test_controller.py b/tests/test_controller.py
index 2c78385..905c9ce 100644
--- a/tests/test_controller.py
+++ b/tests/test_controller.py
@@ -7,11 +7,13 @@ from app.api.actions import install
 from app.schema.library import Library, Tag, Book, BookTag, Path, Env
 from app.controller import LibraryController
 
+from app.controller.exceptions import LibraryReadException
+
 import logging
 logging.basicConfig(level=logging.DEBUG)
 logger = logging.getLogger(__name__)
 
-class TestDB(unittest.TestCase):
+class TestController(unittest.TestCase):
 
     def setUp(self):
         os.environ["DEV_URIA_BIBLIOGAME_CONFIG_DB"] = "sqlite:///"
@@ -141,7 +143,7 @@ class TestDB(unittest.TestCase):
         library = LibraryController(1, engine=self.engine)
         library.delete()
 
-        self.assertRaises(NoResultFound, LibraryController, 1, engine=self.engine)    
+        self.assertRaises(LibraryReadException, LibraryController, 1, engine=self.engine)    
         
 if __name__ == "__main__":
     unittest.main()
\ No newline at end of file