diff --git a/doc/vendor-ext/vendor-ext.md b/doc/vendor-ext/vendor-ext.md
index db85cc36caf01540ed91ee08488c717f783c4cf0..0faab08f106de63a0c4a18cd5c278afa87ca4d8f 100644
--- a/doc/vendor-ext/vendor-ext.md
+++ b/doc/vendor-ext/vendor-ext.md
@@ -6,9 +6,7 @@ Is defined on 3GPP TS 29.122 and 29.500 and is tightly connected with “support
 ## Supported Features in Publish API:
 ![Publish Supported Features](../images/vendor-ext/publish_supported_features.png)
 
-## Types of vendor extensions
-
-**Data models**
+## Vendor extensions Data Models
 
 * Extend the information element with vendor specific fields
 ### Fields have specific naming schemes:
@@ -40,7 +38,14 @@ Is defined on 3GPP TS 29.122 and 29.500 and is tightly connected with “support
         }
 ```
 
-## Discover Query Parameters
+**Service API Description and AEF Profile Data**
+
+![Service API Description](../images/vendor-ext/service_api_description.png)
+
+![AEF Profile](../images/vendor-ext/aef_profile.png)
+
+
+### Discover Query Parameters
 
 * Provisioning of vendor-specific query parameters to support additional vendor-specific filtering criteria
 ### A vendor-specific query parameter shall be encoded as follows:
@@ -62,5 +67,7 @@ GET {apiRoot}/3gpp-monitoring-event/v1/{scsAsId}/subscriptions?vend-spec-max-rep
 ```
 
 
+
+
 [OCF Web]: https://ocf.etsi.org/ "OCF Web"
 [OCF Documentation]: https://ocf.etsi.org/documentation/ "OCF Documentation"