diff --git a/src/SOL002/VNFPerformanceManagement/VNFPerformanceManagement.yaml b/src/SOL002/VNFPerformanceManagement/VNFPerformanceManagement.yaml
index 0548ef6734191439be81ac3825f1ebeeecaa3982..9abf4488664486255a0381c76e50cb9c99ee7312 100644
--- a/src/SOL002/VNFPerformanceManagement/VNFPerformanceManagement.yaml
+++ b/src/SOL002/VNFPerformanceManagement/VNFPerformanceManagement.yaml
@@ -674,7 +674,7 @@ paths:
           type: string
         - name: filter
           description: >
-            Attribute-based filtering expression according to clause 4.3.2.
+            Attribute-based filtering expression according to clause 5.2 of ETSI GS NFV-SOL 013.
             The VNFM shall support receiving this parameter as part of the URI query string.
             The EM may supply this parameter. All attribute names that appear in the Thresholds
             and in data types referenced from it shall be supported by the VNFM in attribute-based filtering expression.
@@ -708,7 +708,8 @@ paths:
           description: >
             Marker to obtain the next page of a paged response.
             Shall be supported by the VNFM if the VNFM supports alternative 2
-            (paging) according to clause 4.7.2.1 for this resource.
+            (paging) according to clause 5.4.2.1 of ETSI GS NFV-SOL 013 for 
+            this resource.
           in: query
           required: false
           type: string
@@ -719,10 +720,17 @@ paths:
 
             Information about zero or more thresholds was queried
             successfully.
-            The response body shall contain in an array the representations of zero or more thresholds,
-            as defined in clause 6.5.2.9.
-            If the VNFM supports alternative 2 (paging) according to clause 4.7.2.1 for this resource,
-            inclusion of the Link HTTP header in this response shall follow the provisions in clause 4.7.2.3.
+          
+            If the "filter" URI parameter was supplied in the request, 
+            the data in the response body shall have been transformed 
+            according to the rules specified in clause 5.2.2 of 
+            ETSI GS NFV SOL 013.
+            The response body shall contain in an array the representations 
+            of zero or more thresholds, as defined in clause 6.5.2.9.
+            If the VNFM supports alternative 2 (paging) according to 
+            clause 5.4.2.1 of ETSI GS NFV-SOL 013 for this resource, inclusion 
+            of the Link HTTP header in this response shall follow the provisions 
+            in clause 5.4.2.3 of ETSI GS NFV-SOL 013.
           headers:
             Content-Type:
               description: The MIME type of the body of the response.