diff --git a/api-ref/source/images.inc b/api-ref/source/images.inc
index 3ad087810729..ec4c80bc8cbd 100644
--- a/api-ref/source/images.inc
+++ b/api-ref/source/images.inc
@@ -8,7 +8,7 @@
 
    These APIs are proxy calls to the Image service. Nova has
    deprecated all the proxy APIs and users should use the native APIs
-   instead.
+   instead. These will fail with a 404 after microversion 2.35.
    See: `Relevant Image APIs
    <http://developer.openstack.org/api-ref-image-v2.html#images-images-v2>`__.
 
diff --git a/api-ref/source/os-baremetal-nodes.inc b/api-ref/source/os-baremetal-nodes.inc
index 46316634eb86..125e96be9fbd 100644
--- a/api-ref/source/os-baremetal-nodes.inc
+++ b/api-ref/source/os-baremetal-nodes.inc
@@ -9,7 +9,7 @@
    These APIs are proxy calls to the Ironic service. They exist for
    legacy compatibility, but no new applications should use them.
    Nova has deprecated all the proxy APIs and users should use the native
-   APIs instead.
+   APIs instead. These will fail with a 404 after microversion 2.35.
    See: `Relevant Bare metal APIs
    <http://developer.openstack.org/api-ref/baremetal/index.html#nodes-nodes>`__.
 
diff --git a/api-ref/source/os-fixed-ips.inc b/api-ref/source/os-fixed-ips.inc
index 249f8823371e..cbe1f4cdf892 100644
--- a/api-ref/source/os-fixed-ips.inc
+++ b/api-ref/source/os-fixed-ips.inc
@@ -8,7 +8,7 @@
 
    These APIs are proxy calls to the Network service. Nova has
    deprecated all the proxy APIs and users should use the native APIs
-   instead.
+   instead. These will fail with a 404 after microversion 2.35.
 
 Shows data for a fixed IP, such as host name, CIDR, and address. Also,
 reserves and releases a fixed IP address.
diff --git a/api-ref/source/os-floating-ip-dns.inc b/api-ref/source/os-floating-ip-dns.inc
index 969cd625bc8b..e1733274138a 100644
--- a/api-ref/source/os-floating-ip-dns.inc
+++ b/api-ref/source/os-floating-ip-dns.inc
@@ -11,7 +11,7 @@
 
    These APIs are proxy calls to the Network service. Nova has
    deprecated all the proxy APIs and users should use the native APIs
-   instead.
+   instead. These will fail with a 404 after microversion 2.35.
    See: `Relevant Network APIs
    <http://developer.openstack.org/api-ref-networking-v2-ext.html>`__.
 
diff --git a/api-ref/source/os-floating-ip-pools.inc b/api-ref/source/os-floating-ip-pools.inc
index e5f5b3eff785..0653dd4562e4 100644
--- a/api-ref/source/os-floating-ip-pools.inc
+++ b/api-ref/source/os-floating-ip-pools.inc
@@ -8,7 +8,7 @@
 
    These APIs are proxy calls to the Network service. Nova has
    deprecated all the proxy APIs and users should use the native APIs
-   instead.
+   instead. These will fail with a 404 after microversion 2.35.
    See: `Relevant Network APIs
    <http://developer.openstack.org/api-ref-networking-v2-ext.html>`__.
 
diff --git a/api-ref/source/os-floating-ips-bulk.inc b/api-ref/source/os-floating-ips-bulk.inc
index f9974bf6831b..10aafe1570bc 100644
--- a/api-ref/source/os-floating-ips-bulk.inc
+++ b/api-ref/source/os-floating-ips-bulk.inc
@@ -8,7 +8,7 @@
 
    These APIs are proxy calls to the Network service. Nova has
    deprecated all the proxy APIs and users should use the native APIs
-   instead.
+   instead. These will fail with a 404 after microversion 2.35.
    See: `Relevant Network APIs
    <http://developer.openstack.org/api-ref-networking-v2-ext.html>`__.
 
diff --git a/api-ref/source/os-floating-ips.inc b/api-ref/source/os-floating-ips.inc
index baeefa033094..1637ec9b2eea 100644
--- a/api-ref/source/os-floating-ips.inc
+++ b/api-ref/source/os-floating-ips.inc
@@ -11,7 +11,7 @@
 
    These APIs are proxy calls to the Network service. Nova has
    deprecated all the proxy APIs and users should use the native APIs
-   instead.
+   instead. These will fail with a 404 after microversion 2.35.
    See: `Relevant Network APIs
    <http://developer.openstack.org/api-ref/networking/v2-ext/index.html#layer-3-networking-routers-floatingips>`__.
 
diff --git a/api-ref/source/os-fping.inc b/api-ref/source/os-fping.inc
index 69ba4a68e012..428f2e5e33e1 100644
--- a/api-ref/source/os-fping.inc
+++ b/api-ref/source/os-fping.inc
@@ -8,6 +8,7 @@
 
    This API only works with ``nova-network`` which is
    deprecated. It should be avoided in any new applications.
+   These will fail with a 404 after microversion 2.35.
 
 Pings instances and reports which instances are alive.
 
diff --git a/api-ref/source/os-networks.inc b/api-ref/source/os-networks.inc
index 8fb8706e1461..08680a29ce39 100644
--- a/api-ref/source/os-networks.inc
+++ b/api-ref/source/os-networks.inc
@@ -15,7 +15,8 @@
              ``neutron`` when appropriate, but as with all translation
              proxies, this is far from perfect compatibility. These
              APIs should be avoided in new applications in favor of
-             using ``neutron`` directly.
+             using ``neutron`` directly. These will fail with a 404
+             after microversion 2.35.
              See: `Relevant Network APIs
              <http://developer.openstack.org/api-ref-networking-v2.html#networks>`__.
 
diff --git a/api-ref/source/os-security-group-default-rules.inc b/api-ref/source/os-security-group-default-rules.inc
index 596b2056b8ce..4fa3943d3aef 100644
--- a/api-ref/source/os-security-group-default-rules.inc
+++ b/api-ref/source/os-security-group-default-rules.inc
@@ -11,6 +11,7 @@
 
    This API only available with ``nova-network`` which is
    deprecated. It should be avoided in any new applications.
+   These will fail with a 404 after microversion 2.35.
 
 Lists, shows information for, and creates default security group rules.
 
diff --git a/api-ref/source/os-security-group-rules.inc b/api-ref/source/os-security-group-rules.inc
index f6c042d9e23d..a7f20af93a4d 100644
--- a/api-ref/source/os-security-group-rules.inc
+++ b/api-ref/source/os-security-group-rules.inc
@@ -10,7 +10,7 @@
 
    These APIs are proxy calls to the Network service. Nova has
    deprecated all the proxy APIs and users should use the native APIs
-   instead.
+   instead. These will fail with a 404 after microversion 2.35.
    See: `Relevant Network APIs
    <http://developer.openstack.org/api-ref/networking/v2-ext/index.html#security-group-rules-security-group-rules>`__.
 
diff --git a/api-ref/source/os-security-groups.inc b/api-ref/source/os-security-groups.inc
index 56c35cead005..0d49d92c98cb 100644
--- a/api-ref/source/os-security-groups.inc
+++ b/api-ref/source/os-security-groups.inc
@@ -11,7 +11,7 @@
 
    These APIs are proxy calls to the Network service. Nova has
    deprecated all the proxy APIs and users should use the native APIs
-   instead.
+   instead. These will fail with a 404 after microversion 2.35.
    See: `Relevant Network APIs
    <http://developer.openstack.org/api-ref/networking/v2-ext/index.html#security-groups-security-groups>`__.
 
diff --git a/api-ref/source/os-tenant-network.inc b/api-ref/source/os-tenant-network.inc
index fd5e989d7c07..9e5b53c74e75 100644
--- a/api-ref/source/os-tenant-network.inc
+++ b/api-ref/source/os-tenant-network.inc
@@ -11,7 +11,7 @@
 
    These APIs are proxy calls to the Network service. Nova has
    deprecated all the proxy APIs and users should use the native APIs
-   instead.
+   instead. These will fail with a 404 after microversion 2.35.
    See: `Relevant Network APIs
    <http://developer.openstack.org/api-ref-networking-v2-ext.html>`__.
 
diff --git a/api-ref/source/os-volumes.inc b/api-ref/source/os-volumes.inc
index 3360d1c1917d..3ac1cea1069f 100644
--- a/api-ref/source/os-volumes.inc
+++ b/api-ref/source/os-volumes.inc
@@ -8,7 +8,7 @@
 
    These APIs are proxy calls to the Volume service. Nova has
    deprecated all the proxy APIs and users should use the native APIs
-   instead.
+   instead. These will fail with a 404 after microversion 2.35.
    See: `Relevant Volume APIs
    <http://developer.openstack.org/api-ref-blockstorage-v2.html#volumes-v2-volumes>`__.