diff --git a/docs/formatdomain.rst b/docs/formatdomain.rst
index 61ccd8895a..512e6abd27 100644
--- a/docs/formatdomain.rst
+++ b/docs/formatdomain.rst
@@ -1221,6 +1221,27 @@ Resource partitions are currently supported by the QEMU and LXC drivers, which
map partition paths to cgroups directories, in all mounted controllers.
:since:`Since 1.0.5`
+Fibre Channel VMID
+-------------------
+
+The FC SAN can provide various QoS levels and access control depending on the
+VMID. It can also collect telemetry data at per-VM level which can be used
+to enhance the IO performance of the VM. This can be configured by using
+the ``appid`` attribute of ``fibrechannel`` element. The attribute contains
+single string (max 128 bytes) and it is used by kernel to create VMID.
+
+::
+
+ ...
+
+
+
+ ...
+
+Using this feature requires Fibre Channel capable HW, kernel compiled with
+option ``CONFIG_BLK_CGROUP_FC_APPID`` and ``nvme_fc`` kernel module loaded.
+:since:`Since 7.7.0`
+
:anchor:``
CPU model and topology
diff --git a/docs/schemas/domaincommon.rng b/docs/schemas/domaincommon.rng
index 9b669d9de5..11fa24f398 100644
--- a/docs/schemas/domaincommon.rng
+++ b/docs/schemas/domaincommon.rng
@@ -576,6 +576,17 @@
+
+
+
+
+
+ [ -~]{1,128}
+
+
+
+
+