diff --git a/.apigentools-info b/.apigentools-info
index e9130b7092a..c89439e7c7c 100644
--- a/.apigentools-info
+++ b/.apigentools-info
@@ -4,13 +4,13 @@
     "spec_versions": {
         "v1": {
             "apigentools_version": "1.0.0b1",
-            "regenerated": "2020-04-23 17:08:23.456288",
-            "spec_repo_commit": "1445ecd"
+            "regenerated": "2020-04-23 18:33:52.021207",
+            "spec_repo_commit": "6d8b10b"
         },
         "v2": {
             "apigentools_version": "1.0.0b1",
-            "regenerated": "2020-04-23 17:08:28.766933",
-            "spec_repo_commit": "1445ecd"
+            "regenerated": "2020-04-23 18:33:57.233422",
+            "spec_repo_commit": "6d8b10b"
         }
     }
 }
\ No newline at end of file
diff --git a/api_docs/v2/RolesApi.md b/api_docs/v2/RolesApi.md
index 4cd60cd63dd..589e4ed3e88 100644
--- a/api_docs/v2/RolesApi.md
+++ b/api_docs/v2/RolesApi.md
@@ -770,7 +770,6 @@ Name | Type | Description  | Notes
 | Status code | Description | Response headers |
 |-------------|-------------|------------------|
 | **200** | OK |  -  |
-| **400** | Bad Request |  -  |
 | **403** | Authentication error |  -  |
 
 
@@ -854,6 +853,7 @@ Name | Type | Description  | Notes
 | Status code | Description | Response headers |
 |-------------|-------------|------------------|
 | **200** | OK |  -  |
+| **400** | Bad Request |  -  |
 | **403** | Authentication error |  -  |
 | **404** | Not found |  -  |
 
@@ -938,6 +938,7 @@ Name | Type | Description  | Notes
 | Status code | Description | Response headers |
 |-------------|-------------|------------------|
 | **200** | OK |  -  |
+| **400** | Bad Request |  -  |
 | **403** | Authentication error |  -  |
 | **404** | Not found |  -  |
 
diff --git a/src/main/java/com/datadog/api/v2/client/api/RolesApi.java b/src/main/java/com/datadog/api/v2/client/api/RolesApi.java
index 344cf1eb8c6..5ad1c62bb79 100644
--- a/src/main/java/com/datadog/api/v2/client/api/RolesApi.java
+++ b/src/main/java/com/datadog/api/v2/client/api/RolesApi.java
@@ -1019,7 +1019,6 @@ public APIlistRolesRequest filter(String filter) {
        <table summary="Response Details" border="1">
          <tr><td> Status Code </td><td> Description </td><td> Response Headers </td></tr>
          <tr><td> 200 </td><td> OK </td><td>  -  </td></tr>
-         <tr><td> 400 </td><td> Bad Request </td><td>  -  </td></tr>
          <tr><td> 403 </td><td> Authentication error </td><td>  -  </td></tr>
        </table>
      
@@ -1037,7 +1036,6 @@ public RolesResponse execute() throws ApiException {
        <table summary="Response Details" border="1">
          <tr><td> Status Code </td><td> Description </td><td> Response Headers </td></tr>
          <tr><td> 200 </td><td> OK </td><td>  -  </td></tr>
-         <tr><td> 400 </td><td> Bad Request </td><td>  -  </td></tr>
          <tr><td> 403 </td><td> Authentication error </td><td>  -  </td></tr>
        </table>
      
@@ -1130,6 +1128,7 @@ public APIremovePermissionFromRoleRequest body(RelationshipToPermission body) {
        <table summary="Response Details" border="1">
          <tr><td> Status Code </td><td> Description </td><td> Response Headers </td></tr>
          <tr><td> 200 </td><td> OK </td><td>  -  </td></tr>
+         <tr><td> 400 </td><td> Bad Request </td><td>  -  </td></tr>
          <tr><td> 403 </td><td> Authentication error </td><td>  -  </td></tr>
          <tr><td> 404 </td><td> Not found </td><td>  -  </td></tr>
        </table>
@@ -1148,6 +1147,7 @@ public PermissionsResponse execute() throws ApiException {
        <table summary="Response Details" border="1">
          <tr><td> Status Code </td><td> Description </td><td> Response Headers </td></tr>
          <tr><td> 200 </td><td> OK </td><td>  -  </td></tr>
+         <tr><td> 400 </td><td> Bad Request </td><td>  -  </td></tr>
          <tr><td> 403 </td><td> Authentication error </td><td>  -  </td></tr>
          <tr><td> 404 </td><td> Not found </td><td>  -  </td></tr>
        </table>
@@ -1242,6 +1242,7 @@ public APIremoveUserFromRoleRequest body(RelationshipToUser body) {
        <table summary="Response Details" border="1">
          <tr><td> Status Code </td><td> Description </td><td> Response Headers </td></tr>
          <tr><td> 200 </td><td> OK </td><td>  -  </td></tr>
+         <tr><td> 400 </td><td> Bad Request </td><td>  -  </td></tr>
          <tr><td> 403 </td><td> Authentication error </td><td>  -  </td></tr>
          <tr><td> 404 </td><td> Not found </td><td>  -  </td></tr>
        </table>
@@ -1260,6 +1261,7 @@ public UsersResponse execute() throws ApiException {
        <table summary="Response Details" border="1">
          <tr><td> Status Code </td><td> Description </td><td> Response Headers </td></tr>
          <tr><td> 200 </td><td> OK </td><td>  -  </td></tr>
+         <tr><td> 400 </td><td> Bad Request </td><td>  -  </td></tr>
          <tr><td> 403 </td><td> Authentication error </td><td>  -  </td></tr>
          <tr><td> 404 </td><td> Not found </td><td>  -  </td></tr>
        </table>
diff --git a/src/main/java/com/datadog/api/v2/openapi.yaml b/src/main/java/com/datadog/api/v2/openapi.yaml
index e87c372c6ae..65f117868e3 100644
--- a/src/main/java/com/datadog/api/v2/openapi.yaml
+++ b/src/main/java/com/datadog/api/v2/openapi.yaml
@@ -1027,12 +1027,6 @@ paths:
               schema:
                 $ref: '#/components/schemas/RolesResponse'
           description: OK
-        '400':
-          content:
-            applcation/json:
-              schema:
-                $ref: '#/components/schemas/APIErrorResponse'
-          description: Bad Request
         '403':
           content:
             applcation/json:
@@ -1184,6 +1178,12 @@ paths:
               schema:
                 $ref: '#/components/schemas/PermissionsResponse'
           description: OK
+        '400':
+          content:
+            application/json:
+              schema:
+                $ref: '#/components/schemas/APIErrorResponse'
+          description: Bad Request
         '403':
           content:
             application/json:
@@ -1285,6 +1285,12 @@ paths:
               schema:
                 $ref: '#/components/schemas/UsersResponse'
           description: OK
+        '400':
+          content:
+            application/json:
+              schema:
+                $ref: '#/components/schemas/APIErrorResponse'
+          description: Bad Request
         '403':
           content:
             application/json: