diff --git a/src/SOL005/NSLifecycleManagement/definitions/SOL005_def.yaml b/src/SOL005/NSLifecycleManagement/definitions/SOL005_def.yaml
index 5e4c1952a545d5d3267e65bc643d397326624bb7..8c492601e9f7a4f16913552fe5f3dddcc9742380 100644
--- a/src/SOL005/NSLifecycleManagement/definitions/SOL005_def.yaml
+++ b/src/SOL005/NSLifecycleManagement/definitions/SOL005_def.yaml
@@ -496,10 +496,12 @@
          description: >
            Identifies the lower bound of the port range. upperPort Integer
          type: integer
+         minimum: 0
        upperPort:
          description: >
            Identifies the upper bound of the port range.
          type: integer
+         minimum: 0
          
    Mask:
      description: >
@@ -611,4 +613,4 @@
              description: >
                The token endpoint from which the access token can be obtained.
                Shall be present if it has not been provisioned out of band.
-             $ref: "#/definitions/Uri"
\ No newline at end of file
+             $ref: "#/definitions/Uri"
diff --git a/src/SOL005/VNFPackageManagement/definitions/SOL005VNFPMManagement_def.yaml b/src/SOL005/VNFPackageManagement/definitions/SOL005VNFPMManagement_def.yaml
index 9a511cdb122b4f74448499acbebbb72a297db83b..2f978032ec38e4a59cfc25fc5725705f13d7c47a 100644
--- a/src/SOL005/VNFPackageManagement/definitions/SOL005VNFPMManagement_def.yaml
+++ b/src/SOL005/VNFPackageManagement/definitions/SOL005VNFPMManagement_def.yaml
@@ -249,15 +249,18 @@ definitions:
       minDisk:
         description: >
           The minimal disk for this software image in bytes.
-        type: integer 
+        type: integer
+        minimum: 0 
       minRam:
         description: >
           The minimal RAM for this software image in bytes.
-        type: integer 
+        type: integer
+        minimum: 0 
       size:
         description: >
           Size of this software image in bytes.
-        type: integer 
+        type: integer
+        minimum: 0 
       userMetadata:
         description: >
           User-defined data.
@@ -655,4 +658,4 @@ definitions:
       - PKG_DELETE: The VNF package has been deleted.
     enum:
     - "OP_STATE_CHANGE"
-    - "PKG_DELETE"
\ No newline at end of file
+    - "PKG_DELETE"