diff --git a/api-ref/source/v2/parameters.yaml b/api-ref/source/v2/parameters.yaml
index 82688649f..4b33c6c0c 100644
--- a/api-ref/source/v2/parameters.yaml
+++ b/api-ref/source/v2/parameters.yaml
@@ -5792,6 +5792,12 @@ subnetpool_is_default:
   in: body
   required: true
   type: boolean
+subnetpool_is_default-request:
+  description: |
+    The subnetpool is default pool or not.
+  in: body
+  required: false
+  type: boolean
 subnetpools:
   description: |
     A list of ``subnetpool`` objects.
diff --git a/api-ref/source/v2/subnetpools.inc b/api-ref/source/v2/subnetpools.inc
index 54a7f6142..82fe6f7bf 100644
--- a/api-ref/source/v2/subnetpools.inc
+++ b/api-ref/source/v2/subnetpools.inc
@@ -110,6 +110,7 @@ Request
    - default_prefixlen: default_prefixlen
    - max_prefixlen: max_prefixlen
    - description: description-request
+   - is_default: subnetpool_is_default-request
 
 Request Example
 ---------------
@@ -280,6 +281,7 @@ Request
    - default_prefixlen: default_prefixlen
    - max_prefixlen: max_prefixlen
    - description: description-request
+   - is_default: subnetpool_is_default
 
 Request Example
 ---------------