diff --git a/src/pkg/services/m365/api/graph/errors.go b/src/pkg/services/m365/api/graph/errors.go
index 76ed542a4..00dcf5c9d 100644
--- a/src/pkg/services/m365/api/graph/errors.go
+++ b/src/pkg/services/m365/api/graph/errors.go
@@ -131,6 +131,8 @@ var (
 	ErrResourceLocked = clues.New("resource has been locked and must be unlocked by an administrator")
 
 	ErrTokenExpired = clues.New("jwt token expired")
+
+	ErrNameAlreadyExistsConflict = clues.New("Name already exists")
 )
 
 func IsErrApplicationThrottled(err error) bool {
diff --git a/src/pkg/services/m365/api/lists_test.go b/src/pkg/services/m365/api/lists_test.go
index 39e6d11b9..8f8d80006 100644
--- a/src/pkg/services/m365/api/lists_test.go
+++ b/src/pkg/services/m365/api/lists_test.go
@@ -758,6 +758,7 @@ func (suite *ListsAPIIntgSuite) TestLists_PostList() {
 
 	_, err = acl.PostList(ctx, siteID, listName, oldListByteArray, fault.New(true))
 	require.Error(t, err)
+	assert.Equal(t, graph.ErrNameAlreadyExistsConflict, err)
 
 	newListItems := newList.GetItems()
 	require.Less(t, 0, len(newListItems))