diff --git a/matter/src/acl.rs b/matter/src/acl.rs
index a3553c0..708ddee 100644
--- a/matter/src/acl.rs
+++ b/matter/src/acl.rs
@@ -21,7 +21,7 @@ use std::{
 };
 
 use crate::{
-    data_model::objects::{Access, Privilege},
+    data_model::objects::{Access, ClusterId, EndptId, Privilege},
     error::Error,
     fabric,
     interaction_model::messages::GenericPath,
@@ -240,13 +240,17 @@ impl<'a> AccessReq<'a> {
 
 #[derive(FromTLV, ToTLV, Copy, Clone, Debug, PartialEq)]
 pub struct Target {
-    cluster: Option<u32>,
-    endpoint: Option<u16>,
+    cluster: Option<ClusterId>,
+    endpoint: Option<EndptId>,
     device_type: Option<u32>,
 }
 
 impl Target {
-    pub fn new(endpoint: Option<u16>, cluster: Option<u32>, device_type: Option<u32>) -> Self {
+    pub fn new(
+        endpoint: Option<EndptId>,
+        cluster: Option<ClusterId>,
+        device_type: Option<u32>,
+    ) -> Self {
         Self {
             cluster,
             endpoint,
diff --git a/matter/src/data_model/core/mod.rs b/matter/src/data_model/core/mod.rs
index 337d0aa..4386cab 100644
--- a/matter/src/data_model/core/mod.rs
+++ b/matter/src/data_model/core/mod.rs
@@ -234,7 +234,7 @@ enum ResumeReq {
 }
 
 impl objects::ChangeConsumer for DataModel {
-    fn endpoint_added(&self, id: u16, endpoint: &mut Endpoint) -> Result<(), Error> {
+    fn endpoint_added(&self, id: EndptId, endpoint: &mut Endpoint) -> Result<(), Error> {
         endpoint.add_cluster(DescriptorCluster::new(id, self.clone())?)?;
         Ok(())
     }
diff --git a/matter/src/data_model/core/read.rs b/matter/src/data_model/core/read.rs
index c450073..07eb1a3 100644
--- a/matter/src/data_model/core/read.rs
+++ b/matter/src/data_model/core/read.rs
@@ -134,9 +134,9 @@ impl ResumeReadReq {
 impl DataModel {
     pub fn read_attribute_raw(
         &self,
-        endpoint: u16,
-        cluster: u32,
-        attr: u16,
+        endpoint: EndptId,
+        cluster: ClusterId,
+        attr: AttrId,
     ) -> Result<AttrValue, IMStatusCode> {
         let node = self.node.read().unwrap();
         let cluster = node.get_cluster(endpoint, cluster)?;
diff --git a/matter/src/data_model/device_types.rs b/matter/src/data_model/device_types.rs
index 46d133e..9c37971 100644
--- a/matter/src/data_model/device_types.rs
+++ b/matter/src/data_model/device_types.rs
@@ -46,7 +46,7 @@ pub fn device_type_add_root_node(
     fabric_mgr: Arc<FabricMgr>,
     acl_mgr: Arc<AclMgr>,
     pase_mgr: PaseMgr,
-) -> Result<u32, Error> {
+) -> Result<EndptId, Error> {
     // Add the root endpoint
     let endpoint = node.add_endpoint(DEV_TYPE_ROOT_NODE)?;
     if endpoint != 0 {
@@ -78,7 +78,7 @@ pub const DEV_TYPE_ON_SMART_SPEAKER: DeviceType = DeviceType {
     drev: 2,
 };
 
-pub fn device_type_add_on_off_light(node: &mut WriteNode) -> Result<u32, Error> {
+pub fn device_type_add_on_off_light(node: &mut WriteNode) -> Result<EndptId, Error> {
     let endpoint = node.add_endpoint(DEV_TYPE_ON_OFF_LIGHT)?;
     node.add_cluster(endpoint, OnOffCluster::new()?)?;
     Ok(endpoint)
diff --git a/matter/src/data_model/objects/attribute.rs b/matter/src/data_model/objects/attribute.rs
index 419696f..28be5c6 100644
--- a/matter/src/data_model/objects/attribute.rs
+++ b/matter/src/data_model/objects/attribute.rs
@@ -15,7 +15,7 @@
  *    limitations under the License.
  */
 
-use super::{GlobalElements, Privilege};
+use super::{AttrId, GlobalElements, Privilege};
 use crate::{
     error::*,
     // TODO: This layer shouldn't really depend on the TLV layer, should create an abstraction layer
@@ -153,7 +153,7 @@ impl AttrValue {
 
 #[derive(Debug, Clone)]
 pub struct Attribute {
-    pub(super) id: u16,
+    pub(super) id: AttrId,
     pub(super) value: AttrValue,
     pub(super) quality: Quality,
     pub(super) access: Access,
@@ -171,7 +171,7 @@ impl Default for Attribute {
 }
 
 impl Attribute {
-    pub fn new(id: u16, value: AttrValue, access: Access, quality: Quality) -> Self {
+    pub fn new(id: AttrId, value: AttrValue, access: Access, quality: Quality) -> Self {
         Attribute {
             id,
             value,
@@ -189,8 +189,8 @@ impl Attribute {
         }
     }
 
-    pub fn is_system_attr(attr_id: u16) -> bool {
-        attr_id >= (GlobalElements::ServerGenCmd as u16)
+    pub fn is_system_attr(attr_id: AttrId) -> bool {
+        attr_id >= (GlobalElements::ServerGenCmd as AttrId)
     }
 }
 
diff --git a/matter/src/data_model/objects/cluster.rs b/matter/src/data_model/objects/cluster.rs
index 4e02ef7..7ca8350 100644
--- a/matter/src/data_model/objects/cluster.rs
+++ b/matter/src/data_model/objects/cluster.rs
@@ -28,7 +28,7 @@ use num_derive::FromPrimitive;
 use rand::Rng;
 use std::fmt::{self, Debug};
 
-use super::Encoder;
+use super::{AttrId, ClusterId, Encoder};
 
 pub const ATTRS_PER_CLUSTER: usize = 10;
 pub const CMDS_PER_CLUSTER: usize = 8;
@@ -56,7 +56,7 @@ pub struct AttrDetails {
     /// List Index, if any
     pub list_index: Option<Nullable<u16>>,
     /// The actual attribute ID
-    pub attr_id: u16,
+    pub attr_id: AttrId,
 }
 
 impl AttrDetails {
@@ -102,13 +102,13 @@ pub trait ClusterType {
 }
 
 pub struct Cluster {
-    pub(super) id: u32,
+    pub(super) id: ClusterId,
     attributes: Vec<Attribute>,
     data_ver: u32,
 }
 
 impl Cluster {
-    pub fn new(id: u32) -> Result<Cluster, Error> {
+    pub fn new(id: ClusterId) -> Result<Cluster, Error> {
         let mut c = Cluster {
             id,
             attributes: Vec::with_capacity(ATTRS_PER_CLUSTER),
@@ -118,7 +118,7 @@ impl Cluster {
         Ok(c)
     }
 
-    pub fn id(&self) -> u32 {
+    pub fn id(&self) -> ClusterId {
         self.id
     }
 
@@ -167,18 +167,18 @@ impl Cluster {
         }
     }
 
-    fn get_attribute_index(&self, attr_id: u16) -> Option<usize> {
+    fn get_attribute_index(&self, attr_id: AttrId) -> Option<usize> {
         self.attributes.iter().position(|c| c.id == attr_id)
     }
 
-    fn get_attribute(&self, attr_id: u16) -> Result<&Attribute, Error> {
+    fn get_attribute(&self, attr_id: AttrId) -> Result<&Attribute, Error> {
         let index = self
             .get_attribute_index(attr_id)
             .ok_or(Error::AttributeNotFound)?;
         Ok(&self.attributes[index])
     }
 
-    fn get_attribute_mut(&mut self, attr_id: u16) -> Result<&mut Attribute, Error> {
+    fn get_attribute_mut(&mut self, attr_id: AttrId) -> Result<&mut Attribute, Error> {
         let index = self
             .get_attribute_index(attr_id)
             .ok_or(Error::AttributeNotFound)?;
@@ -188,7 +188,7 @@ impl Cluster {
     // Returns a slice of attribute, with either a single attribute or all (wildcard)
     pub fn get_wildcard_attribute(
         &self,
-        attribute: Option<u16>,
+        attribute: Option<AttrId>,
     ) -> Result<(&[Attribute], bool), IMStatusCode> {
         if let Some(a) = attribute {
             if let Some(i) = self.get_attribute_index(a) {
@@ -266,7 +266,7 @@ impl Cluster {
         encoder.encode_status(IMStatusCode::UnsupportedAttribute, 0)
     }
 
-    pub fn read_attribute_raw(&self, attr_id: u16) -> Result<&AttrValue, IMStatusCode> {
+    pub fn read_attribute_raw(&self, attr_id: AttrId) -> Result<&AttrValue, IMStatusCode> {
         let a = self
             .get_attribute(attr_id)
             .map_err(|_| IMStatusCode::UnsupportedAttribute)?;
@@ -300,7 +300,7 @@ impl Cluster {
 
     pub fn write_attribute_from_tlv(
         &mut self,
-        attr_id: u16,
+        attr_id: AttrId,
         data: &TLVElement,
     ) -> Result<(), IMStatusCode> {
         let a = self.get_attribute_mut(attr_id)?;
@@ -319,7 +319,7 @@ impl Cluster {
         }
     }
 
-    pub fn write_attribute_raw(&mut self, attr_id: u16, value: AttrValue) -> Result<(), Error> {
+    pub fn write_attribute_raw(&mut self, attr_id: AttrId, value: AttrValue) -> Result<(), Error> {
         let a = self.get_attribute_mut(attr_id)?;
         a.set_value(value).map(|_| {
             self.cluster_changed();
diff --git a/matter/src/data_model/objects/endpoint.rs b/matter/src/data_model/objects/endpoint.rs
index 7ea22dd..466e7a6 100644
--- a/matter/src/data_model/objects/endpoint.rs
+++ b/matter/src/data_model/objects/endpoint.rs
@@ -19,7 +19,7 @@ use crate::{data_model::objects::ClusterType, error::*, interaction_model::core:
 
 use std::fmt;
 
-use super::DeviceType;
+use super::{ClusterId, DeviceType};
 
 pub const CLUSTERS_PER_ENDPT: usize = 9;
 
@@ -51,18 +51,21 @@ impl Endpoint {
         &self.dev_type
     }
 
-    fn get_cluster_index(&self, cluster_id: u32) -> Option<usize> {
+    fn get_cluster_index(&self, cluster_id: ClusterId) -> Option<usize> {
         self.clusters.iter().position(|c| c.base().id == cluster_id)
     }
 
-    pub fn get_cluster(&self, cluster_id: u32) -> Result<&dyn ClusterType, Error> {
+    pub fn get_cluster(&self, cluster_id: ClusterId) -> Result<&dyn ClusterType, Error> {
         let index = self
             .get_cluster_index(cluster_id)
             .ok_or(Error::ClusterNotFound)?;
         Ok(self.clusters[index].as_ref())
     }
 
-    pub fn get_cluster_mut(&mut self, cluster_id: u32) -> Result<&mut dyn ClusterType, Error> {
+    pub fn get_cluster_mut(
+        &mut self,
+        cluster_id: ClusterId,
+    ) -> Result<&mut dyn ClusterType, Error> {
         let index = self
             .get_cluster_index(cluster_id)
             .ok_or(Error::ClusterNotFound)?;
@@ -72,7 +75,7 @@ impl Endpoint {
     // Returns a slice of clusters, with either a single cluster or all (wildcard)
     pub fn get_wildcard_clusters(
         &self,
-        cluster: Option<u32>,
+        cluster: Option<ClusterId>,
     ) -> Result<(&BoxedClusters, bool), IMStatusCode> {
         if let Some(c) = cluster {
             if let Some(i) = self.get_cluster_index(c) {
@@ -88,7 +91,7 @@ impl Endpoint {
     // Returns a slice of clusters, with either a single cluster or all (wildcard)
     pub fn get_wildcard_clusters_mut(
         &mut self,
-        cluster: Option<u32>,
+        cluster: Option<ClusterId>,
     ) -> Result<(&mut BoxedClusters, bool), IMStatusCode> {
         if let Some(c) = cluster {
             if let Some(i) = self.get_cluster_index(c) {
diff --git a/matter/src/data_model/objects/mod.rs b/matter/src/data_model/objects/mod.rs
index 2791cb4..2fb3aff 100644
--- a/matter/src/data_model/objects/mod.rs
+++ b/matter/src/data_model/objects/mod.rs
@@ -15,6 +15,11 @@
  *    limitations under the License.
  */
 
+pub type EndptId = u16;
+pub type ClusterId = u32;
+pub type AttrId = u16;
+pub type CmdId = u32;
+
 mod attribute;
 pub use attribute::*;
 
diff --git a/matter/src/data_model/objects/node.rs b/matter/src/data_model/objects/node.rs
index 1f2b7cf..ba2f0b2 100644
--- a/matter/src/data_model/objects/node.rs
+++ b/matter/src/data_model/objects/node.rs
@@ -23,10 +23,10 @@ use crate::{
 };
 use std::fmt;
 
-use super::DeviceType;
+use super::{ClusterId, DeviceType, EndptId};
 
 pub trait ChangeConsumer {
-    fn endpoint_added(&self, id: u16, endpoint: &mut Endpoint) -> Result<(), Error>;
+    fn endpoint_added(&self, id: EndptId, endpoint: &mut Endpoint) -> Result<(), Error>;
 }
 
 pub const ENDPTS_PER_ACC: usize = 3;
@@ -61,7 +61,7 @@ impl Node {
         self.changes_cb = Some(consumer);
     }
 
-    pub fn add_endpoint(&mut self, dev_type: DeviceType) -> Result<u32, Error> {
+    pub fn add_endpoint(&mut self, dev_type: DeviceType) -> Result<EndptId, Error> {
         let index = self
             .endpoints
             .iter()
@@ -69,13 +69,13 @@ impl Node {
             .ok_or(Error::NoSpace)?;
         let mut endpoint = Endpoint::new(dev_type)?;
         if let Some(cb) = &self.changes_cb {
-            cb.endpoint_added(index as u16, &mut endpoint)?;
+            cb.endpoint_added(index as EndptId, &mut endpoint)?;
         }
         self.endpoints[index] = Some(endpoint);
-        Ok(index as u32)
+        Ok(index as EndptId)
     }
 
-    pub fn get_endpoint(&self, endpoint_id: u16) -> Result<&Endpoint, Error> {
+    pub fn get_endpoint(&self, endpoint_id: EndptId) -> Result<&Endpoint, Error> {
         if (endpoint_id as usize) < ENDPTS_PER_ACC {
             let endpoint = self.endpoints[endpoint_id as usize]
                 .as_ref()
@@ -86,7 +86,7 @@ impl Node {
         }
     }
 
-    pub fn get_endpoint_mut(&mut self, endpoint_id: u16) -> Result<&mut Endpoint, Error> {
+    pub fn get_endpoint_mut(&mut self, endpoint_id: EndptId) -> Result<&mut Endpoint, Error> {
         if (endpoint_id as usize) < ENDPTS_PER_ACC {
             let endpoint = self.endpoints[endpoint_id as usize]
                 .as_mut()
@@ -97,17 +97,21 @@ impl Node {
         }
     }
 
-    pub fn get_cluster_mut(&mut self, e: u16, c: u32) -> Result<&mut dyn ClusterType, Error> {
+    pub fn get_cluster_mut(
+        &mut self,
+        e: EndptId,
+        c: ClusterId,
+    ) -> Result<&mut dyn ClusterType, Error> {
         self.get_endpoint_mut(e)?.get_cluster_mut(c)
     }
 
-    pub fn get_cluster(&self, e: u16, c: u32) -> Result<&dyn ClusterType, Error> {
+    pub fn get_cluster(&self, e: EndptId, c: ClusterId) -> Result<&dyn ClusterType, Error> {
         self.get_endpoint(e)?.get_cluster(c)
     }
 
     pub fn add_cluster(
         &mut self,
-        endpoint_id: u32,
+        endpoint_id: EndptId,
         cluster: Box<dyn ClusterType>,
     ) -> Result<(), Error> {
         let endpoint_id = endpoint_id as usize;
@@ -124,7 +128,7 @@ impl Node {
     // Returns a slice of endpoints, with either a single endpoint or all (wildcard)
     pub fn get_wildcard_endpoints(
         &self,
-        endpoint: Option<u16>,
+        endpoint: Option<EndptId>,
     ) -> Result<(&BoxedEndpoints, usize, bool), IMStatusCode> {
         if let Some(e) = endpoint {
             let e = e as usize;
@@ -140,7 +144,7 @@ impl Node {
 
     pub fn get_wildcard_endpoints_mut(
         &mut self,
-        endpoint: Option<u16>,
+        endpoint: Option<EndptId>,
     ) -> Result<(&mut BoxedEndpoints, usize, bool), IMStatusCode> {
         if let Some(e) = endpoint {
             let e = e as usize;
@@ -171,7 +175,7 @@ impl Node {
         let (endpoints, mut endpoint_id, wildcard) = self.get_wildcard_endpoints(path.endpoint)?;
         for e in endpoints.iter() {
             if let Some(e) = e {
-                current_path.endpoint = Some(endpoint_id as u16);
+                current_path.endpoint = Some(endpoint_id as EndptId);
                 f(&current_path, e.as_ref())
                     .or_else(|e| if !wildcard { Err(e) } else { Ok(()) })?;
             }
@@ -202,7 +206,7 @@ impl Node {
             self.get_wildcard_endpoints_mut(path.endpoint)?;
         for e in endpoints.iter_mut() {
             if let Some(e) = e {
-                current_path.endpoint = Some(endpoint_id as u16);
+                current_path.endpoint = Some(endpoint_id as EndptId);
                 f(&current_path, e.as_mut())
                     .or_else(|e| if !wildcard { Err(e) } else { Ok(()) })?;
             }
diff --git a/matter/src/data_model/system_model/descriptor.rs b/matter/src/data_model/system_model/descriptor.rs
index 919b586..4fba0fa 100644
--- a/matter/src/data_model/system_model/descriptor.rs
+++ b/matter/src/data_model/system_model/descriptor.rs
@@ -37,12 +37,12 @@ pub enum Attributes {
 
 pub struct DescriptorCluster {
     base: Cluster,
-    endpoint_id: u16,
+    endpoint_id: EndptId,
     data_model: DataModel,
 }
 
 impl DescriptorCluster {
-    pub fn new(endpoint_id: u16, data_model: DataModel) -> Result<Box<Self>, Error> {
+    pub fn new(endpoint_id: EndptId, data_model: DataModel) -> Result<Box<Self>, Error> {
         let mut c = Box::new(DescriptorCluster {
             endpoint_id,
             data_model,
diff --git a/matter/src/interaction_model/messages.rs b/matter/src/interaction_model/messages.rs
index d1de33f..aac30f7 100644
--- a/matter/src/interaction_model/messages.rs
+++ b/matter/src/interaction_model/messages.rs
@@ -16,6 +16,7 @@
  */
 
 use crate::{
+    data_model::objects::{ClusterId, EndptId},
     error::Error,
     tlv::{FromTLV, TLVElement, TLVWriter, TagType, ToTLV},
 };
@@ -25,13 +26,13 @@ use crate::{
 #[derive(Default, Clone, Copy, Debug, PartialEq, FromTLV, ToTLV)]
 #[tlvargs(datatype = "list")]
 pub struct GenericPath {
-    pub endpoint: Option<u16>,
-    pub cluster: Option<u32>,
+    pub endpoint: Option<EndptId>,
+    pub cluster: Option<ClusterId>,
     pub leaf: Option<u32>,
 }
 
 impl GenericPath {
-    pub fn new(endpoint: Option<u16>, cluster: Option<u32>, leaf: Option<u32>) -> Self {
+    pub fn new(endpoint: Option<EndptId>, cluster: Option<ClusterId>, leaf: Option<u32>) -> Self {
         Self {
             endpoint,
             cluster,
@@ -40,7 +41,7 @@ impl GenericPath {
     }
 
     /// Returns Ok, if the path is non wildcard, otherwise returns an error
-    pub fn not_wildcard(&self) -> Result<(u16, u32, u32), Error> {
+    pub fn not_wildcard(&self) -> Result<(EndptId, ClusterId, u32), Error> {
         match *self {
             GenericPath {
                 endpoint: Some(e),
@@ -257,7 +258,7 @@ pub mod ib {
     use std::fmt::Debug;
 
     use crate::{
-        data_model::objects::{AttrDetails, EncodeValue},
+        data_model::objects::{AttrDetails, AttrId, ClusterId, EncodeValue, EndptId},
         error::Error,
         interaction_model::core::IMStatusCode,
         tlv::{FromTLV, Nullable, TLVElement, TLVWriter, TagType, ToTLV},
@@ -275,7 +276,12 @@ pub mod ib {
     }
 
     impl<'a> InvResp<'a> {
-        pub fn cmd_new(endpoint: u16, cluster: u32, cmd: u16, data: EncodeValue<'a>) -> Self {
+        pub fn cmd_new(
+            endpoint: EndptId,
+            cluster: ClusterId,
+            cmd: u16,
+            data: EncodeValue<'a>,
+        ) -> Self {
             Self::Cmd(CmdData::new(
                 CmdPath::new(Some(endpoint), Some(cluster), Some(cmd)),
                 data,
@@ -448,9 +454,9 @@ pub mod ib {
     pub struct AttrPath {
         pub tag_compression: Option<bool>,
         pub node: Option<u64>,
-        pub endpoint: Option<u16>,
-        pub cluster: Option<u32>,
-        pub attr: Option<u16>,
+        pub endpoint: Option<EndptId>,
+        pub cluster: Option<ClusterId>,
+        pub attr: Option<AttrId>,
         pub list_index: Option<Nullable<u16>>,
     }
 
@@ -490,7 +496,11 @@ pub mod ib {
     }
 
     impl CmdPath {
-        pub fn new(endpoint: Option<u16>, cluster: Option<u32>, command: Option<u16>) -> Self {
+        pub fn new(
+            endpoint: Option<EndptId>,
+            cluster: Option<ClusterId>,
+            command: Option<u16>,
+        ) -> Self {
             Self {
                 path: GenericPath {
                     endpoint,
@@ -525,8 +535,8 @@ pub mod ib {
     #[derive(FromTLV, ToTLV, Copy, Clone)]
     pub struct ClusterPath {
         pub node: Option<u64>,
-        pub endpoint: u16,
-        pub cluster: u32,
+        pub endpoint: EndptId,
+        pub cluster: ClusterId,
     }
 
     #[derive(FromTLV, ToTLV, Copy, Clone)]
@@ -539,8 +549,8 @@ pub mod ib {
     #[tlvargs(datatype = "list")]
     pub struct EventPath {
         pub node: Option<u64>,
-        pub endpoint: Option<u16>,
-        pub cluster: Option<u32>,
+        pub endpoint: Option<EndptId>,
+        pub cluster: Option<ClusterId>,
         pub event: Option<u32>,
         pub is_urgent: Option<bool>,
     }