diff --git a/lib/customer_service/aggregates/customer_id.ex b/lib/customer_service/aggregates/customer_id.ex
index a4b0b6a..36a3ab2 100644
--- a/lib/customer_service/aggregates/customer_id.ex
+++ b/lib/customer_service/aggregates/customer_id.ex
@@ -31,7 +31,7 @@ defmodule CustomerService.Aggregates.CustomerId do
   end
 
   defimpl String.Chars do
-    def to_string(%CustomerService.Aggregates.LeadId{
+    def to_string(%CustomerService.Aggregates.CustomerId{
           org_id: org_id,
           customer_type: type,
           customer_id: customer_id
diff --git a/lib/customer_service/projectors/customer.ex b/lib/customer_service/projectors/customer.ex
index 6ab8649..626ed16 100644
--- a/lib/customer_service/projectors/customer.ex
+++ b/lib/customer_service/projectors/customer.ex
@@ -13,7 +13,7 @@ defmodule CustomerService.Projectors.Customer do
     %CustomerService.Aggregates.CustomerId{org_id: org_id, customer_id: customer_id} = event.id
 
     Ecto.Multi.insert(multi, :customer, %Customer{
-      id: CustomerId.to_string(event.id),
+      id: to_string(event.id),
       org_id: org_id,
       customer_id: customer_id,
       customer_type: "individual",
@@ -42,7 +42,7 @@ defmodule CustomerService.Projectors.Customer do
     %CustomerService.Aggregates.CustomerId{org_id: org_id, customer_id: customer_id} = e.id
 
     Ecto.Multi.insert(multi, :customer, %Customer{
-      id: CustomerId.to_string(e.id),
+      id: to_string(e.id),
       org_id: org_id,
       customer_id: customer_id,
       customer_type: "corporate",
@@ -58,7 +58,7 @@ defmodule CustomerService.Projectors.Customer do
   end)
 
   project(%Events.CustomerUpdated{} = e, _meta, fn multi ->
-    composite_id = CustomerId.to_string(e.id)
+    composite_id = to_string(e.id)
 
     Ecto.Multi.update_all(multi, :customer, from(c in Customer, where: c.id == ^composite_id),
       set: [
@@ -75,7 +75,7 @@ defmodule CustomerService.Projectors.Customer do
   end)
 
   project(%Events.CorporateCustomerUpdated{} = e, _meta, fn multi ->
-    composite_id = CustomerId.to_string(e.id)
+    composite_id = to_string(e.id)
 
     Ecto.Multi.update_all(multi, :customer, from(c in Customer, where: c.id == ^composite_id),
       set: [
diff --git a/lib/customer_service/projectors/quick_lead.ex b/lib/customer_service/projectors/quick_lead.ex
index 6d746ed..5123219 100644
--- a/lib/customer_service/projectors/quick_lead.ex
+++ b/lib/customer_service/projectors/quick_lead.ex
@@ -13,7 +13,7 @@ defmodule CustomerService.Projectors.QuickLead do
     %CustomerService.Aggregates.LeadId{org_id: org_id, lead_id: lead_id} = event.id
 
     Ecto.Multi.insert(multi, :quick_lead, %QuickLead{
-      id: LeadId.to_string(event.id),
+      id: to_string(event.id),
       org_id: org_id,
       lead_id: lead_id,
       name: event.name,
@@ -38,7 +38,7 @@ defmodule CustomerService.Projectors.QuickLead do
   end)
 
   project(%Events.QuickLeadUpdated{} = event, _meta, fn multi ->
-    composite_id = LeadId.to_string(event.id)
+    composite_id = to_string(event.id)
 
     Ecto.Multi.update_all(multi, :quick_lead, from(q in QuickLead, where: q.id == ^composite_id),
       set: [
@@ -55,7 +55,7 @@ defmodule CustomerService.Projectors.QuickLead do
   end)
 
   project(%Events.LeadStatusUpdated{} = event, _meta, fn multi ->
-    composite_id = LeadId.to_string(event.id)
+    composite_id = to_string(event.id)
 
     Ecto.Multi.update_all(multi, :quick_lead, from(q in QuickLead, where: q.id == ^composite_id),
       set: [
diff --git a/lib/customer_service_web/controllers/error_json.ex b/lib/customer_service_web/controllers/error_json.ex
deleted file mode 100644
index b234443..0000000
--- a/lib/customer_service_web/controllers/error_json.ex
+++ /dev/null
@@ -1,60 +0,0 @@
-defmodule CustomerServiceWeb.ErrorJSON do
-  @moduledoc """
-  This module is invoked by your endpoint in case of errors on JSON requests.
-  """
-
-  alias Ecto.Changeset
-  alias OpenApiSpex.Error
-
-  def render("404.json", _assigns) do
-    %{errors: %{detail: "Not Found"}}
-  end
-
-  def render("500.json", assigns) do
-    detail = detailed_message(assigns[:reason], "Internal Server Error")
-    %{errors: %{detail: detail}}
-  end
-
-  def render("400.json", assigns) do
-    detail = detailed_message(assigns[:reason], "Bad Request")
-    %{errors: %{detail: detail}}
-  end
-
-  def render("422.json", assigns) do
-    detail = detailed_message(assigns[:reason], "Unprocessable Entity")
-    %{errors: %{detail: detail}}
-  end
-
-  def render(template, assigns) do
-    detail =
-      detailed_message(
-        assigns[:reason],
-        Phoenix.Controller.status_message_from_template(template)
-      )
-
-    %{errors: %{detail: detail}}
-  end
-
-  defp detailed_message(nil, default), do: default
-
-  defp detailed_message(%Changeset{} = changeset, _default) do
-    format_changeset_errors(changeset)
-    |> inspect()
-  end
-
-  defp detailed_message(%Error{errors: errors}, _default) do
-    Enum.map_join(errors, ", ", fn e -> "#{e.code}: #{e.message}" end)
-  end
-
-  defp detailed_message(reason, _default) do
-    inspect(reason, pretty: true)
-  end
-
-  defp format_changeset_errors(changeset) do
-    Changeset.traverse_errors(changeset, fn {msg, opts} ->
-      Enum.reduce(opts, msg, fn {key, value}, acc ->
-        String.replace(acc, "%{#{key}}", to_string(value))
-      end)
-    end)
-  end
-end