diff --git a/MecAppDTypes.yaml b/MecAppDTypes.yaml
index 9e1906da428fbe6fe943742a8f974f9a47fe9dd2..e63f6b3c15e2f7186b0d7609a87d07ec47d151fc 100644
--- a/MecAppDTypes.yaml
+++ b/MecAppDTypes.yaml
@@ -1,12 +1,12 @@
 tosca_definitions_version: tosca_simple_yaml_1_3
-description: ETSI MEC 037 appd types definitions version 3.1.1
+description: ETSI MEC 037 appd types definitions version 3.2.1
 metadata:
   template_name: etsi_mec037_appd_types
   template_author: ETSI_MEC
-  template_version: 3.1.1
+  template_version: 3.2.1
 
 imports:
-   - https://forge.etsi.org/rep/nfv/SOL001/raw/v3.6.1/etsi_nfv_sol001_vnfd_types.yaml
+   - https://forge.etsi.org/rep/nfv/SOL001/raw/v4.4.1/etsi_nfv_sol001_vnfd_types.yaml
 
 data_types:
   tosca.datatypes.mec.ServiceDependency:
@@ -120,7 +120,7 @@ data_types:
         description: the action of the MEC host data plane, when a packet matches the traffic_filter.
         required: true
         constraints:
-          - valid_values: [ DROP, FORWARD_DECAPSULATED, FORWARD_AS_IS, PASSTHROUGH, DUPLICATED_DECAPSULATED, DUPLICATE_AS_IS ]
+          - valid_values: [ DROP, FORWARD_DECAPSULATED, FORWARD_ENCAPSULATED, PASSTHROUGH, DUPLICATE_DECAPSULATED, DUPLICATE_ENCAPSULATED ]
       dst_interface:
         type: list
         description: describes the destination interface information, if the action is FORWARD.
@@ -295,6 +295,12 @@ data_types:
     derived_from: tosca.datatypes.Root
     description: specification of MEC application requirements related to traffic rules
     properties:
+      direction:
+        type: string
+        description: Direction of the data flow when filtering per flow, "00" = downlink, "01" = uplink.
+        required: false
+        constraints:
+          - valid_values: [ "00", "01" ]
       src_address:
         type: list
         description: source IP address(es).
@@ -415,10 +421,6 @@ data_types:
         type: string
         description: source address of the tunnel.
         required: true
-      tunnel_specific_data:
-        type: string
-        description: parameters specific to the tunnel.
-        required: false
 
 node_types:
   tosca.nodes.mec.MecApp: