diff --git a/api-ref/source/v3/attachments.inc b/api-ref/source/v3/attachments.inc
index 605b884c09e..240e47e1c92 100644
--- a/api-ref/source/v3/attachments.inc
+++ b/api-ref/source/v3/attachments.inc
@@ -6,6 +6,10 @@ Attachments
 Lists all, lists all with details, shows details for, creates, and
 deletes attachment.
 
+.. note:: Everything except for `Complete attachment` is new as of the 3.27
+          microversion. `Complete attachment` is new as of the 3.44
+          microversion.
+
 
 Delete attachment
 ~~~~~~~~~~~~~~~~~
@@ -14,6 +18,8 @@ Delete attachment
 
 Deletes an attachment.
 
+Available starting in the 3.27 microversion.
+
 Normal response codes: 200
 
 Error response codes: badRequest(400), itemNotFound(404)
@@ -35,6 +41,7 @@ Show attachment details
 
 Shows details for an attachment.
 
+Available starting in the 3.27 microversion.
 
 Normal response codes: 200
 
@@ -79,6 +86,8 @@ List attachments with details
 Lists all attachments with details. Since v3.31 if non-admin
 users specify invalid filters in the url, API will return bad request.
 
+Available starting in the 3.27 microversion.
+
 Normal response codes: 200
 
 Error response codes: badRequest(400)
@@ -123,6 +132,7 @@ List attachments
 Lists all attachments, since v3.31 if non-admin users
 specify invalid filters in the url, API will return bad request.
 
+Available starting in the 3.27 microversion.
 
 Normal response codes: 200
 
@@ -166,6 +176,8 @@ Create attachment
 
 Creates an attachment.
 
+Available starting in the 3.27 microversion.
+
 Normal response codes: 202
 
 Error response codes: badRequest(400), itemNotFound(404)
@@ -218,6 +230,8 @@ Update an attachment
 Update a reserved attachment record with connector information
 and set up the appropriate connection_info from the driver.
 
+Available starting in the 3.27 microversion.
+
 Normal response codes: 200
 
 Error response codes: badRequest(400), itemNotFound(404)
@@ -267,6 +281,8 @@ Complete attachment
 
 Complete an attachment for a cinder volume.
 
+Available starting in the 3.44 microversion.
+
 Normal response codes: 202
 Error response codes: badRequest(400), itemNotFound(404)