diff --git a/CHANGELOG.md b/CHANGELOG.md
index a2ecc70..b46f3d1 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -11,12 +11,17 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ### Changed
 
+## [1.2.0] - 2024-01-22
+
+### Added
+
+- Adds support for XXX status code.
+
 ## [1.1.2] - 2024-01-20
 
 ### Changed
 
-- Changed the code by replacing ioutil.ReadAll and ioutil.NopCloser with io.ReadAll and io.NopCloser, respectively, due to their deprecation. 
-
+- Changed the code by replacing ioutil.ReadAll and ioutil.NopCloser with io.ReadAll and io.NopCloser, respectively, due to their deprecation.
 
 ## [1.1.1] - 2023-11-22
 
diff --git a/internal/mock_parse_node_factory.go b/internal/mock_parse_node_factory.go
index 20a083e..15503bd 100644
--- a/internal/mock_parse_node_factory.go
+++ b/internal/mock_parse_node_factory.go
@@ -57,6 +57,12 @@ func (e *MockParseNode) GetCollectionOfEnumValues(parser absser.EnumFactory) ([]
 	return nil, nil
 }
 func (e *MockParseNode) GetObjectValue(ctor absser.ParsableFactory) (absser.Parsable, error) {
+	if ctor != nil {
+		_, err := ctor(e)
+		if err != nil {
+			return nil, err
+		}
+	}
 	return &MockEntity{}, nil
 }
 func (e *MockParseNode) GetStringValue() (*string, error) {
diff --git a/nethttp_request_adapter.go b/nethttp_request_adapter.go
index 6955b6c..a4dcc58 100644
--- a/nethttp_request_adapter.go
+++ b/nethttp_request_adapter.go
@@ -757,6 +757,8 @@ func (a *NetHttpRequestAdapter) throwIfFailedResponse(ctx context.Context, respo
 			errorCtor = errorMappings["4XX"]
 		} else if response.StatusCode >= 500 && response.StatusCode < 600 && errorMappings["5XX"] != nil {
 			errorCtor = errorMappings["5XX"]
+		} else if errorMappings["XXX"] != nil && response.StatusCode >= 400 && response.StatusCode < 600 {
+			errorCtor = errorMappings["XXX"]
 		}
 	}
 
diff --git a/nethttp_request_adapter_test.go b/nethttp_request_adapter_test.go
index 47cd4c5..5ac0215 100644
--- a/nethttp_request_adapter_test.go
+++ b/nethttp_request_adapter_test.go
@@ -2,6 +2,7 @@ package nethttplibrary
 
 import (
 	"context"
+	"github.com/microsoft/kiota-abstractions-go/serialization"
 	nethttp "net/http"
 	httptest "net/http/httptest"
 	"net/url"
@@ -75,6 +76,40 @@ func TestItThrowsApiError(t *testing.T) {
 	assert.Equal(t, "example-guid", apiError.ResponseHeaders.Get("client-request-id")[0])
 }
 
+func TestGenericError(t *testing.T) {
+	testServer := httptest.NewServer(nethttp.HandlerFunc(func(res nethttp.ResponseWriter, req *nethttp.Request) {
+		res.WriteHeader(500)
+		res.Write([]byte("test"))
+	}))
+	defer func() { testServer.Close() }()
+	authProvider := &absauth.AnonymousAuthenticationProvider{}
+	adapter, err := NewNetHttpRequestAdapterWithParseNodeFactory(authProvider, &internal.MockParseNodeFactory{})
+	assert.Nil(t, err)
+	assert.NotNil(t, adapter)
+
+	uri, err := url.Parse(testServer.URL)
+	assert.Nil(t, err)
+	assert.NotNil(t, uri)
+	request := abs.NewRequestInformation()
+	request.SetUri(*uri)
+	request.Method = abs.GET
+
+	result := 0
+	errorMapping := abs.ErrorMappings{
+		"XXX": func(parseNode serialization.ParseNode) (serialization.Parsable, error) {
+			result++
+			return nil, &abs.ApiError{
+				Message: "test XXX message",
+			}
+		},
+	}
+
+	_, err2 := adapter.SendPrimitive(context.TODO(), request, "[]byte", errorMapping)
+	assert.NotNil(t, err2)
+	assert.Equal(t, 1, result)
+	assert.Equal(t, "test XXX message", err2.Error())
+}
+
 func TestImplementationHonoursInterface(t *testing.T) {
 	authProvider := &absauth.AnonymousAuthenticationProvider{}
 	adapter, err := NewNetHttpRequestAdapter(authProvider)