diff --git a/src/Microsoft.OpenApi.OData.Reader/Generator/OpenApiErrorSchemaGenerator.cs b/src/Microsoft.OpenApi.OData.Reader/Generator/OpenApiErrorSchemaGenerator.cs
index 7acf3bf0..879a2665 100644
--- a/src/Microsoft.OpenApi.OData.Reader/Generator/OpenApiErrorSchemaGenerator.cs
+++ b/src/Microsoft.OpenApi.OData.Reader/Generator/OpenApiErrorSchemaGenerator.cs
@@ -155,7 +155,7 @@ public static OpenApiSchema CreateErrorMainSchema(string rootNamespaceName)
                         }
                     },
                     {
-                        "innererror",
+                        "innerError",
                         new OpenApiSchema
                         {
                             UnresolvedReference = true,
diff --git a/src/Microsoft.OpenApi.OData.Reader/Microsoft.OpenAPI.OData.Reader.csproj b/src/Microsoft.OpenApi.OData.Reader/Microsoft.OpenAPI.OData.Reader.csproj
index dfe00b6f..726096a8 100644
--- a/src/Microsoft.OpenApi.OData.Reader/Microsoft.OpenAPI.OData.Reader.csproj
+++ b/src/Microsoft.OpenApi.OData.Reader/Microsoft.OpenAPI.OData.Reader.csproj
@@ -15,7 +15,7 @@
     <TargetFrameworks>netstandard2.0</TargetFrameworks>
     <PackageId>Microsoft.OpenApi.OData</PackageId>
     <SignAssembly>true</SignAssembly>
-    <Version>1.5.0-preview1</Version>
+    <Version>1.5.0-preview2</Version>
     <Description>This package contains the codes you need to convert OData CSDL to Open API Document of Model.</Description>
     <Copyright>© Microsoft Corporation. All rights reserved.</Copyright>
     <PackageTags>Microsoft OpenApi OData EDM</PackageTags>
@@ -23,6 +23,7 @@
     <PackageReleaseNotes>
 - Resolves operation ids for $count and overloaded functions paths #382, #383
 - Updates README #13, #253, #40
+- Fixes casing in default propertyName for `innerError` in the `ErrorMainSchema`
     </PackageReleaseNotes>
     <AssemblyName>Microsoft.OpenApi.OData.Reader</AssemblyName>
     <AssemblyOriginatorKeyFile>..\..\tool\Microsoft.OpenApi.OData.snk</AssemblyOriginatorKeyFile>
diff --git a/test/Microsoft.OpenAPI.OData.Reader.Tests/Resources/Basic.OpenApi.V2.json b/test/Microsoft.OpenAPI.OData.Reader.Tests/Resources/Basic.OpenApi.V2.json
index 6542fec8..fc0be48c 100644
--- a/test/Microsoft.OpenAPI.OData.Reader.Tests/Resources/Basic.OpenApi.V2.json
+++ b/test/Microsoft.OpenAPI.OData.Reader.Tests/Resources/Basic.OpenApi.V2.json
@@ -1045,7 +1045,7 @@
             "$ref": "#/definitions/DefaultNs.ODataErrors.ErrorDetails"
           }
         },
-        "innererror": {
+        "innerError": {
           "$ref": "#/definitions/DefaultNs.ODataErrors.InnerError"
         }
       }
diff --git a/test/Microsoft.OpenAPI.OData.Reader.Tests/Resources/Basic.OpenApi.V2.yaml b/test/Microsoft.OpenAPI.OData.Reader.Tests/Resources/Basic.OpenApi.V2.yaml
index 5203a44b..d7b71b02 100644
--- a/test/Microsoft.OpenAPI.OData.Reader.Tests/Resources/Basic.OpenApi.V2.yaml
+++ b/test/Microsoft.OpenAPI.OData.Reader.Tests/Resources/Basic.OpenApi.V2.yaml
@@ -685,7 +685,7 @@ definitions:
         type: array
         items:
           $ref: '#/definitions/DefaultNs.ODataErrors.ErrorDetails'
-      innererror:
+      innerError:
         $ref: '#/definitions/DefaultNs.ODataErrors.InnerError'
   DefaultNs.ODataErrors.ErrorDetails:
     required:
diff --git a/test/Microsoft.OpenAPI.OData.Reader.Tests/Resources/Basic.OpenApi.json b/test/Microsoft.OpenAPI.OData.Reader.Tests/Resources/Basic.OpenApi.json
index 45cc42e7..9af2ecaa 100644
--- a/test/Microsoft.OpenAPI.OData.Reader.Tests/Resources/Basic.OpenApi.json
+++ b/test/Microsoft.OpenAPI.OData.Reader.Tests/Resources/Basic.OpenApi.json
@@ -1149,7 +1149,7 @@
               "$ref": "#/components/schemas/DefaultNs.ODataErrors.ErrorDetails"
             }
           },
-          "innererror": {
+          "innerError": {
             "$ref": "#/components/schemas/DefaultNs.ODataErrors.InnerError"
           }
         }
diff --git a/test/Microsoft.OpenAPI.OData.Reader.Tests/Resources/Basic.OpenApi.yaml b/test/Microsoft.OpenAPI.OData.Reader.Tests/Resources/Basic.OpenApi.yaml
index e6de3d70..d9c07846 100644
--- a/test/Microsoft.OpenAPI.OData.Reader.Tests/Resources/Basic.OpenApi.yaml
+++ b/test/Microsoft.OpenAPI.OData.Reader.Tests/Resources/Basic.OpenApi.yaml
@@ -755,7 +755,7 @@ components:
           type: array
           items:
             $ref: '#/components/schemas/DefaultNs.ODataErrors.ErrorDetails'
-        innererror:
+        innerError:
           $ref: '#/components/schemas/DefaultNs.ODataErrors.InnerError'
     DefaultNs.ODataErrors.ErrorDetails:
       required:
diff --git a/test/Microsoft.OpenAPI.OData.Reader.Tests/Resources/Empty.OpenApi.V2.json b/test/Microsoft.OpenAPI.OData.Reader.Tests/Resources/Empty.OpenApi.V2.json
index e61700d9..9048e01d 100644
--- a/test/Microsoft.OpenAPI.OData.Reader.Tests/Resources/Empty.OpenApi.V2.json
+++ b/test/Microsoft.OpenAPI.OData.Reader.Tests/Resources/Empty.OpenApi.V2.json
@@ -44,7 +44,7 @@
             "$ref": "#/definitions/ODataErrors.ErrorDetails"
           }
         },
-        "innererror": {
+        "innerError": {
           "$ref": "#/definitions/ODataErrors.InnerError"
         }
       }
diff --git a/test/Microsoft.OpenAPI.OData.Reader.Tests/Resources/Empty.OpenApi.V2.yaml b/test/Microsoft.OpenAPI.OData.Reader.Tests/Resources/Empty.OpenApi.V2.yaml
index feeba138..6f24fc47 100644
--- a/test/Microsoft.OpenAPI.OData.Reader.Tests/Resources/Empty.OpenApi.V2.yaml
+++ b/test/Microsoft.OpenAPI.OData.Reader.Tests/Resources/Empty.OpenApi.V2.yaml
@@ -31,7 +31,7 @@ definitions:
         type: array
         items:
           $ref: '#/definitions/ODataErrors.ErrorDetails'
-      innererror:
+      innerError:
         $ref: '#/definitions/ODataErrors.InnerError'
   ODataErrors.ErrorDetails:
     required:
diff --git a/test/Microsoft.OpenAPI.OData.Reader.Tests/Resources/Empty.OpenApi.json b/test/Microsoft.OpenAPI.OData.Reader.Tests/Resources/Empty.OpenApi.json
index 06945660..9d42e533 100644
--- a/test/Microsoft.OpenAPI.OData.Reader.Tests/Resources/Empty.OpenApi.json
+++ b/test/Microsoft.OpenAPI.OData.Reader.Tests/Resources/Empty.OpenApi.json
@@ -47,7 +47,7 @@
               "$ref": "#/components/schemas/ODataErrors.ErrorDetails"
             }
           },
-          "innererror": {
+          "innerError": {
             "$ref": "#/components/schemas/ODataErrors.InnerError"
           }
         }
diff --git a/test/Microsoft.OpenAPI.OData.Reader.Tests/Resources/Empty.OpenApi.yaml b/test/Microsoft.OpenAPI.OData.Reader.Tests/Resources/Empty.OpenApi.yaml
index 80c8fbc2..cb39dcf2 100644
--- a/test/Microsoft.OpenAPI.OData.Reader.Tests/Resources/Empty.OpenApi.yaml
+++ b/test/Microsoft.OpenAPI.OData.Reader.Tests/Resources/Empty.OpenApi.yaml
@@ -32,7 +32,7 @@ components:
           type: array
           items:
             $ref: '#/components/schemas/ODataErrors.ErrorDetails'
-        innererror:
+        innerError:
           $ref: '#/components/schemas/ODataErrors.InnerError'
     ODataErrors.ErrorDetails:
       required:
diff --git a/test/Microsoft.OpenAPI.OData.Reader.Tests/Resources/Multiple.Schema.OpenApi.V2.json b/test/Microsoft.OpenAPI.OData.Reader.Tests/Resources/Multiple.Schema.OpenApi.V2.json
index 3644d19c..0a7e96a2 100644
--- a/test/Microsoft.OpenAPI.OData.Reader.Tests/Resources/Multiple.Schema.OpenApi.V2.json
+++ b/test/Microsoft.OpenAPI.OData.Reader.Tests/Resources/Multiple.Schema.OpenApi.V2.json
@@ -5782,7 +5782,7 @@
             "$ref": "#/definitions/Default.ODataErrors.ErrorDetails"
           }
         },
-        "innererror": {
+        "innerError": {
           "$ref": "#/definitions/Default.ODataErrors.InnerError"
         }
       }
diff --git a/test/Microsoft.OpenAPI.OData.Reader.Tests/Resources/Multiple.Schema.OpenApi.V2.yaml b/test/Microsoft.OpenAPI.OData.Reader.Tests/Resources/Multiple.Schema.OpenApi.V2.yaml
index 82170e86..b3417eb3 100644
--- a/test/Microsoft.OpenAPI.OData.Reader.Tests/Resources/Multiple.Schema.OpenApi.V2.yaml
+++ b/test/Microsoft.OpenAPI.OData.Reader.Tests/Resources/Multiple.Schema.OpenApi.V2.yaml
@@ -4207,7 +4207,7 @@ definitions:
         type: array
         items:
           $ref: '#/definitions/Default.ODataErrors.ErrorDetails'
-      innererror:
+      innerError:
         $ref: '#/definitions/Default.ODataErrors.InnerError'
   Default.ODataErrors.ErrorDetails:
     required:
diff --git a/test/Microsoft.OpenAPI.OData.Reader.Tests/Resources/Multiple.Schema.OpenApi.json b/test/Microsoft.OpenAPI.OData.Reader.Tests/Resources/Multiple.Schema.OpenApi.json
index e87526b7..fb014b15 100644
--- a/test/Microsoft.OpenAPI.OData.Reader.Tests/Resources/Multiple.Schema.OpenApi.json
+++ b/test/Microsoft.OpenAPI.OData.Reader.Tests/Resources/Multiple.Schema.OpenApi.json
@@ -6517,7 +6517,7 @@
               "$ref": "#/components/schemas/Default.ODataErrors.ErrorDetails"
             }
           },
-          "innererror": {
+          "innerError": {
             "$ref": "#/components/schemas/Default.ODataErrors.InnerError"
           }
         }
diff --git a/test/Microsoft.OpenAPI.OData.Reader.Tests/Resources/Multiple.Schema.OpenApi.yaml b/test/Microsoft.OpenAPI.OData.Reader.Tests/Resources/Multiple.Schema.OpenApi.yaml
index 594efc73..41391f52 100644
--- a/test/Microsoft.OpenAPI.OData.Reader.Tests/Resources/Multiple.Schema.OpenApi.yaml
+++ b/test/Microsoft.OpenAPI.OData.Reader.Tests/Resources/Multiple.Schema.OpenApi.yaml
@@ -4696,7 +4696,7 @@ components:
           type: array
           items:
             $ref: '#/components/schemas/Default.ODataErrors.ErrorDetails'
-        innererror:
+        innerError:
           $ref: '#/components/schemas/Default.ODataErrors.InnerError'
     Default.ODataErrors.ErrorDetails:
       required:
diff --git a/test/Microsoft.OpenAPI.OData.Reader.Tests/Resources/TripService.OpenApi.V2.json b/test/Microsoft.OpenAPI.OData.Reader.Tests/Resources/TripService.OpenApi.V2.json
index c6072898..395d643b 100644
--- a/test/Microsoft.OpenAPI.OData.Reader.Tests/Resources/TripService.OpenApi.V2.json
+++ b/test/Microsoft.OpenAPI.OData.Reader.Tests/Resources/TripService.OpenApi.V2.json
@@ -28151,7 +28151,7 @@
             "$ref": "#/definitions/Microsoft.OData.Service.Sample.TrippinInMemory.Models.ODataErrors.ErrorDetails"
           }
         },
-        "innererror": {
+        "innerError": {
           "$ref": "#/definitions/Microsoft.OData.Service.Sample.TrippinInMemory.Models.ODataErrors.InnerError"
         }
       }
diff --git a/test/Microsoft.OpenAPI.OData.Reader.Tests/Resources/TripService.OpenApi.V2.yaml b/test/Microsoft.OpenAPI.OData.Reader.Tests/Resources/TripService.OpenApi.V2.yaml
index 80dd09d9..44e4b4b8 100644
--- a/test/Microsoft.OpenAPI.OData.Reader.Tests/Resources/TripService.OpenApi.V2.yaml
+++ b/test/Microsoft.OpenAPI.OData.Reader.Tests/Resources/TripService.OpenApi.V2.yaml
@@ -19776,7 +19776,7 @@ definitions:
         type: array
         items:
           $ref: '#/definitions/Microsoft.OData.Service.Sample.TrippinInMemory.Models.ODataErrors.ErrorDetails'
-      innererror:
+      innerError:
         $ref: '#/definitions/Microsoft.OData.Service.Sample.TrippinInMemory.Models.ODataErrors.InnerError'
   Microsoft.OData.Service.Sample.TrippinInMemory.Models.ODataErrors.ErrorDetails:
     required:
diff --git a/test/Microsoft.OpenAPI.OData.Reader.Tests/Resources/TripService.OpenApi.json b/test/Microsoft.OpenAPI.OData.Reader.Tests/Resources/TripService.OpenApi.json
index 9b9133b9..9524cf59 100644
--- a/test/Microsoft.OpenAPI.OData.Reader.Tests/Resources/TripService.OpenApi.json
+++ b/test/Microsoft.OpenAPI.OData.Reader.Tests/Resources/TripService.OpenApi.json
@@ -31542,7 +31542,7 @@
               "$ref": "#/components/schemas/Microsoft.OData.Service.Sample.TrippinInMemory.Models.ODataErrors.ErrorDetails"
             }
           },
-          "innererror": {
+          "innerError": {
             "$ref": "#/components/schemas/Microsoft.OData.Service.Sample.TrippinInMemory.Models.ODataErrors.InnerError"
           }
         }
diff --git a/test/Microsoft.OpenAPI.OData.Reader.Tests/Resources/TripService.OpenApi.yaml b/test/Microsoft.OpenAPI.OData.Reader.Tests/Resources/TripService.OpenApi.yaml
index b2bcab63..19dd0d0d 100644
--- a/test/Microsoft.OpenAPI.OData.Reader.Tests/Resources/TripService.OpenApi.yaml
+++ b/test/Microsoft.OpenAPI.OData.Reader.Tests/Resources/TripService.OpenApi.yaml
@@ -21963,7 +21963,7 @@ components:
           type: array
           items:
             $ref: '#/components/schemas/Microsoft.OData.Service.Sample.TrippinInMemory.Models.ODataErrors.ErrorDetails'
-        innererror:
+        innerError:
           $ref: '#/components/schemas/Microsoft.OData.Service.Sample.TrippinInMemory.Models.ODataErrors.InnerError'
     Microsoft.OData.Service.Sample.TrippinInMemory.Models.ODataErrors.ErrorDetails:
       required: