diff --git a/api-ref/source/v3/parameters.yaml b/api-ref/source/v3/parameters.yaml
index 69f4fa5eb52..9a5c2f0785d 100644
--- a/api-ref/source/v3/parameters.yaml
+++ b/api-ref/source/v3/parameters.yaml
@@ -176,12 +176,6 @@ volume_id_path:
   in: path
   required: true
   type: string
-volume_type_access:
-  description: |
-    The ID of Volume Type to be accessed by project.
-  in: path
-  required: true
-  type: string
 volume_type_id:
   description: |
     The UUID for an existing volume type.
@@ -415,6 +409,12 @@ active_backend_id:
   in: body
   required: false
   type: string
+add_project_access:
+  description: |
+    Adds volume type access to a project.
+  in: body
+  required: true
+  type: object
 add_volumes:
   description: |
     One or more volume UUIDs, separated by commas, to
@@ -2194,6 +2194,12 @@ qos_specs:
   in: body
   required: true
   type: object
+qos_specs_id:
+  description: |
+    The QoS specifications ID.
+  in: body
+  required: true
+  type: string
 QoS_support:
   description: |
     The quality of service (QoS) support.
@@ -2255,6 +2261,12 @@ reference:
   in: body
   required: true
   type: object
+remove_project_access:
+  description: |
+    Removes volume type access from a project.
+  in: body
+  required: true
+  type: object
 remove_volumes:
   description: |
     One or more volume UUIDs, separated by commas, to
@@ -2961,6 +2973,12 @@ volume_type_6:
   in: body
   required: true
   type: string
+volume_type_access:
+  description: |
+    The object contains volume type to be accessed by project.
+  in: body
+  required: true
+  type: object
 volume_type_id_body:
   description: |
     The UUID of the volume type.
diff --git a/api-ref/source/v3/volume-type-access.inc b/api-ref/source/v3/volume-type-access.inc
index 9cd4378618d..5139096b20f 100644
--- a/api-ref/source/v3/volume-type-access.inc
+++ b/api-ref/source/v3/volume-type-access.inc
@@ -33,9 +33,10 @@ Request
 
 .. rest_parameters:: parameters.yaml
 
-   - project: project
    - project_id: project_id_path
-   - volume_type: volume_type_access
+   - volume_type: volume_type_id
+   - addProjectAccess: add_project_access
+   - project: project
 
 Request Example
 ---------------
@@ -64,9 +65,10 @@ Request
 
 .. rest_parameters:: parameters.yaml
 
-   - project: project
    - project_id: project_id_path
-   - volume_type: volume_type_access
+   - volume_type: volume_type_id
+   - removeProjectAccess: remove_project_access
+   - project: project
 
 Request Example
 ---------------
@@ -96,7 +98,7 @@ Request
 .. rest_parameters:: parameters.yaml
 
    - project_id: project_id_path
-   - volume_type: volume_type_access
+   - volume_type: volume_type_id
 
 
 Response Parameters
@@ -104,7 +106,9 @@ Response Parameters
 
 .. rest_parameters:: parameters.yaml
 
+   - volume_type_access: volume_type_access
    - project_id: project_id
+   - volume_type_id: volume_type_id_body
 
 
 
diff --git a/api-ref/source/v3/volumes-v3-types.inc b/api-ref/source/v3/volumes-v3-types.inc
index 943308fddb8..3dada7ed93d 100644
--- a/api-ref/source/v3/volumes-v3-types.inc
+++ b/api-ref/source/v3/volumes-v3-types.inc
@@ -267,8 +267,8 @@ Request
 
 .. rest_parameters:: parameters.yaml
 
-   - volume_type_id: volume_type_id
    - project_id: project_id_path
+   - volume_type_id: volume_type_id
 
 
 Response Parameters
@@ -281,6 +281,7 @@ Response Parameters
    - extra_specs: extra_specs_volume_type_required
    - description: description_volume_type_required
    - name: name_volume_type_required
+   - id: volume_type_id_body
 
 
 Response Example
@@ -351,8 +352,8 @@ Request
 
 .. rest_parameters:: parameters.yaml
 
-   - volume_type_id: volume_type_id
    - project_id: project_id_path
+   - volume_type_id: volume_type_id
 
 
 List all volume types
@@ -390,6 +391,11 @@ Response Parameters
    - volume_types: volume_types
    - extra_specs: extra_specs_volume_type_required
    - name: name_volume_type_required
+   - is_public: is_public_volume_type_required
+   - description: description_volume_type_required
+   - id: volume_type_id_body
+   - os-volume-type-access:is_public: is_public_volume_type_required
+   - qos_specs_id: qos_specs_id
 
 Response Example
 ----------------
@@ -418,8 +424,8 @@ Request
 
 .. rest_parameters:: parameters.yaml
 
-   - volume_type: volume_type_1
    - project_id: project_id_path
+   - volume_type: volume_type_1
    - name: name_volume_type_required
    - os-volume-type-access:is_public: is_public_volume_type_optional
    - description: description_volume_type_optional
@@ -472,8 +478,8 @@ Request
 
 .. rest_parameters:: parameters.yaml
 
-   - volume_type_id: volume_type_id
    - project_id: project_id_path
+   - volume_type_id: volume_type_id
 
 
 Response Parameters
@@ -551,8 +557,8 @@ Request
 
 .. rest_parameters:: parameters.yaml
 
-   - volume_type_id: volume_type_id
    - project_id: project_id_path
+   - volume_type_id: volume_type_id
    - encryption_id: encryption_id
 
 
@@ -576,8 +582,8 @@ Request
 
 .. rest_parameters:: parameters.yaml
 
-   - volume_type_id: volume_type_id
    - project_id: project_id_path
+   - volume_type_id: volume_type_id
    - encryption: encryption
    - key_size: key_size
    - provider: provider
@@ -631,8 +637,8 @@ Request
 
 .. rest_parameters:: parameters.yaml
 
-   - volume_type_id: volume_type_id
    - project_id: project_id_path
+   - volume_type_id: volume_type_id
    - encryption_id: encryption_id
    - encryption: encryption
    - key_size: key_size