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/NSPerformanceManagement/NSperformanceManagement.yaml b/src/SOL005/NSPerformanceManagement/NSPerformanceManagement.yaml
similarity index 100%
rename from src/SOL005/NSPerformanceManagement/NSperformanceManagement.yaml
rename to src/SOL005/NSPerformanceManagement/NSPerformanceManagement.yaml
diff --git a/src/SOL005/NSPerformanceManagement/definitions/SOL005NSPerfomananceManagement_def.yaml b/src/SOL005/NSPerformanceManagement/definitions/SOL005NSPerfomananceManagement_def.yaml
index 9bca92750fde07ab9b0dea96b43b0fd3e9f32834..5e0d8c1df364d3c5857c754b136e209f55c8f0ea 100644
--- a/src/SOL005/NSPerformanceManagement/definitions/SOL005NSPerfomananceManagement_def.yaml
+++ b/src/SOL005/NSPerformanceManagement/definitions/SOL005NSPerfomananceManagement_def.yaml
@@ -60,7 +60,8 @@ definitions:
           within one reporting period are reported together.    
           In particular when choosing short collection and reporting periods, the number of PM jobs that can be
           supported depends on the capability of the producing entity.
-        type: UnsignedInt
+        type: integer
+        minimum: 0
         default: 0       
       reportingPeriod:
         description: >
@@ -73,7 +74,8 @@ definitions:
           within one reporting period are reported together.    
           In particular when choosing short collection and reporting periods, the number of PM jobs that can be
           supported depends on the capability of the producing entity.          
-        type: UnsignedInt
+        type: integer
+        minimum: 0
         default: 0        
       reportingBoundary:
         description: >
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"