diff --git a/docs/known_issues.rst b/docs/known_issues.rst
index e93062e3..83bb3084 100644
--- a/docs/known_issues.rst
+++ b/docs/known_issues.rst
@@ -21,16 +21,15 @@ A known issue can list one or both of the following entries:
   Some known issues have a workaround.
   Sometimes, they are discovered later and added over time.
 
-..
-  .. version-filter::
-    :default: v1-2-1
-    :container: dl/dt
-    :tags: [("wontfix", "Won't fix")]
+.. version-filter::
+  :default: v1-2-1
+  :container: dl/dt
+  :tags: [("wontfix", "Won't fix")]
 
-  .. page-filter::
-    :name: issues
+.. page-filter::
+  :name: issues
 
-    wontfix    Won't fix
+  wontfix    Won't fix
 
 List of known issues
 ********************
diff --git a/docs/links.txt b/docs/links.txt
index 51cad488..906411d4 100644
--- a/docs/links.txt
+++ b/docs/links.txt
@@ -88,6 +88,12 @@
 
 .. ### Source: Separate TechDocs bundles
 
+.. _`Zigbee CIDs for nRF52840`: https://docs.nordicsemi.com/bundle/comp_matrix_nrf52840/page/COMP/nrf52840/nrf52840_zigbee_cids.html
+.. _`Zigbee CIDs for nRF5340`: https://docs.nordicsemi.com/bundle/comp_matrix_nrf5340/page/COMP/nrf5340/nrf5340_zigbee_cids.html
+.. _`Zigbee CIDs for nRF54L05`: https://docs.nordicsemi.com/bundle/comp_matrix_nrf54l05/page/COMP/nrf54l05/nrf54l05_zigbee_cids.html
+.. _`Zigbee CIDs for nRF54L10`: https://docs.nordicsemi.com/bundle/comp_matrix_nrf54l10/page/COMP/nrf54l10/nrf54l10_zigbee_cids.html
+.. _`Zigbee CIDs for nRF54L15`: https://docs.nordicsemi.com/bundle/comp_matrix_nrf54l15/page/COMP/nrf54l15/nrf54l15_zigbee_cids.html
+
 .. _`Using MCUboot in nRF Connect SDK`: https://docs.nordicsemi.com/bundle/ncs-2.9.2/page/mcuboot/readme-ncs.html
 
 .. _`Programming the nRF52840 Dongle`: https://docs.nordicsemi.com/bundle/nrf-connect-programmer/page/programming_dk.html#programming-the-nrf52840-dongle
diff --git a/docs/zboss/certification.rst b/docs/zboss/certification.rst
index 056d0bf7..ade094c2 100644
--- a/docs/zboss/certification.rst
+++ b/docs/zboss/certification.rst
@@ -7,4 +7,34 @@ ZBOSS library certification
    :local:
    :depth: 2
 
-The current release of |addon| for the |NCS| contains a not certified ZBOSS library.
+Zigbee ZBOSS R23 libraries in the |addon| for the |NCS| are always tested in-house by Nordic Semiconductor to conform to Zigbee Pro R23 test specification.
+However, these libraries are only periodically verified by external test service provider and granted Zigbee Compliant Platform certification by Connectivity Standards Alliance.
+
+.. figure:: images/zigbee_certification_levels.png
+   :alt: Zigbee certification levels
+
+   Zigbee certification levels
+
+Certification levels
+********************
+
+The certification is based on CSA's `Zigbee certification policy`_, which distinguishes the following levels of certification:
+
+* Compliant Platform
+* Certified Product
+
+The certification guarantees that a platform or product will work and will interoperate with other compliant platforms or certified products, respectively.
+
+Nordic Semiconductor provides the Zigbee Compliant Platform.
+You can use this platform as the building block for your Zigbee Certified Product, which is conformant with the ZCL and BDB standard.
+
+Certification IDs
+*****************
+
+Check the compatibility matrices for your device for information about the latest certification ID entries (CIDs) for the combination of the Zigbee R23 add-on version and Nordic Semiconductor's SoCs:
+
+* `Zigbee CIDs for nRF54L15`_
+* `Zigbee CIDs for nRF54L10`_
+* `Zigbee CIDs for nRF54L05`_
+* `Zigbee CIDs for nRF5340`_
+* `Zigbee CIDs for nRF52840`_