diff --git a/openapi/owanalytics.yaml b/openapi/owanalytics.yaml
index b7ccb84..d8db87a 100644
--- a/openapi/owanalytics.yaml
+++ b/openapi/owanalytics.yaml
@@ -27,71 +27,13 @@ components:
 
   responses:
     NotFound:
-      description: The specified resource was not found.
-      content:
-        application/json:
-          schema:
-            properties:
-              ErrorCode:
-                type: integer
-              ErrorDetails:
-                type: string
-              ErrorDescription:
-                type: string
-
+      $ref: 'https://github.com/Telecominfraproject/wlan-cloud-ucentralsec/blob/main/openpapi/owsec.yaml#/components/responses/NotFound'
     Unauthorized:
-      description: The requested does not have sufficient rights to perform the operation.
-      content:
-        application/json:
-          schema:
-            properties:
-              ErrorCode:
-                type: integer
-                enum:
-                  - 0     # Success
-                  - 1     # PASSWORD_CHANGE_REQUIRED,
-                  - 2     # INVALID_CREDENTIALS,
-                  - 3     # PASSWORD_ALREADY_USED,
-                  - 4     # USERNAME_PENDING_VERIFICATION,
-                  - 5     # PASSWORD_INVALID,
-                  - 6     # INTERNAL_ERROR,
-                  - 7     # ACCESS_DENIED,
-                  - 8     # INVALID_TOKEN
-                  - 9     # EXPIRED_TOKEN
-                  - 10    # RATE_LIMIT_EXCEEDED
-                  - 11    # BAD_MFA_TRANSACTION
-                  - 12    # MFA_FAILURE
-                  - 13    # SECURITY_SERVICE_UNREACHABLE
-              ErrorDetails:
-                type: string
-              ErrorDescription:
-                type: string
-
+      $ref: 'https://github.com/Telecominfraproject/wlan-cloud-ucentralsec/blob/main/openpapi/owsec.yaml#/components/responses/Unauthorized'
     Success:
-      description: The requested operation was performed.
-      content:
-        application/json:
-          schema:
-            properties:
-              Operation:
-                type: string
-              Details:
-                type: string
-              Code:
-                type: integer
-
+      $ref: 'https://github.com/Telecominfraproject/wlan-cloud-ucentralsec/blob/main/openpapi/owsec.yaml#/components/responses/Success'
     BadRequest:
-      description: The requested operation failed.
-      content:
-        application/json:
-          schema:
-            properties:
-              ErrorCode:
-                type: integer
-              ErrorDetails:
-                type: string
-              ErrorDescription:
-                type: integer
+      $ref: 'https://github.com/Telecominfraproject/wlan-cloud-ucentralsec/blob/main/openpapi/owsec.yaml#/components/responses/BadRequest'
 
   schemas:
     ObjectInfo:
diff --git a/src/framework/MicroService.h b/src/framework/MicroService.h
index 8447a5e..85dcf5d 100644
--- a/src/framework/MicroService.h
+++ b/src/framework/MicroService.h
@@ -27,6 +27,11 @@ namespace OpenWifi {
     inline uint64_t Now() { return std::time(nullptr); };
 }
 
+namespace OpenWifi::Utils {
+    std::vector<unsigned char> base64decode(const std::string& input);
+    std::string base64encode(const unsigned char *input, uint32_t size);
+}
+
 using namespace std::chrono_literals;
 
 #include "Poco/Util/Application.h"
@@ -238,6 +243,11 @@ namespace OpenWifi::RESTAPI_utils {
         Obj.set(Field,Value);
     }
 
+    inline void field_to_json(Poco::JSON::Object &Obj, const char *Field, const Poco::Data::BLOB &Value) {
+        auto Result = Utils::base64encode((const unsigned char *)Value.rawContent(),Value.size());
+        Obj.set(Field,Result);
+    }
+
     inline void field_to_json(Poco::JSON::Object &Obj, const char *Field, const Types::StringPairVec & S) {
         Poco::JSON::Array   Array;
         for(const auto &i:S) {
@@ -334,12 +344,12 @@ namespace OpenWifi::RESTAPI_utils {
 
     inline void field_from_json(const Poco::JSON::Object::Ptr &Obj, const char *Field, double & Value) {
         if(Obj->has(Field) && !Obj->isNull(Field))
-            Value = (double) Obj->get(Field);
+            Value = (double)Obj->get(Field);
     }
 
     inline void field_from_json(const Poco::JSON::Object::Ptr &Obj, const char *Field, float & Value) {
         if(Obj->has(Field) && !Obj->isNull(Field))
-            Value = (float) Obj->get(Field);
+            Value = (float)Obj->get(Field);
     }
 
     inline void field_from_json(const Poco::JSON::Object::Ptr &Obj, const char *Field, bool &Value) {
@@ -374,7 +384,14 @@ namespace OpenWifi::RESTAPI_utils {
 
     inline void field_from_json(const Poco::JSON::Object::Ptr &Obj, const char *Field, uint64_t &Value) {
         if(Obj->has(Field) && !Obj->isNull(Field))
-            Value = (uint64_t ) Obj->get(Field);
+            Value = (uint64_t)Obj->get(Field);
+    }
+
+    inline void field_from_json(const Poco::JSON::Object::Ptr &Obj, const char *Field, Poco::Data::BLOB &Value) {
+        if(Obj->has(Field) && !Obj->isNull(Field)) {
+            auto Result = Utils::base64decode(Obj->get(Field).toString());
+            Value.assignRaw((const unsigned char *)&Result[0],Result.size());
+        }
     }
 
     inline void field_from_json(const Poco::JSON::Object::Ptr &Obj, const char *Field, Types::StringPairVec &Vec) {
@@ -2064,6 +2081,17 @@ namespace OpenWifi {
             return false;
         }
 
+        static inline bool AssignIfPresent(const Poco::JSON::Object::Ptr &O, const std::string &Field, Poco::Data::BLOB &Value) {
+            if(O->has(Field)) {
+                std::string Content = O->get(Field).toString();
+                auto DecodedBlob = Utils::base64decode(Content);
+                Value.assignRaw((const unsigned char *)&DecodedBlob[0],DecodedBlob.size());
+                return true;
+            }
+            return false;
+        }
+
+
         template <typename T> bool AssignIfPresent(const Poco::JSON::Object::Ptr &O, const std::string &Field, const T &value, T & assignee) {
             if(O->has(Field)) {
                 assignee = value;
diff --git a/src/framework/orm.h b/src/framework/orm.h
index 7b358a9..4fc8a15 100644
--- a/src/framework/orm.h
+++ b/src/framework/orm.h
@@ -133,6 +133,37 @@ namespace ORM {
         return R;
     }
 
+    inline std::string WHERE_AND_(std::string Result) {
+        return Result;
+    }
+
+    template <typename T, typename... Args> std::string WHERE_AND_(std::string Result, const char *fieldName, const T &Value, Args... args) {
+        if constexpr(std::is_same_v<T,std::string>)
+        {
+            if(!Value.empty()) {
+                if(!Result.empty())
+                    Result += " and ";
+                Result += fieldName;
+                Result += '=';
+                Result += "'";
+                Result += Escape(Value);
+                Result += "'";
+            }
+        } else {
+            if(!Result.empty())
+                Result += " and ";
+            Result += fieldName ;
+            Result += '=';
+            Result += std::to_string(Value);
+        }
+        return WHERE_AND_(Result,args...);
+    }
+
+    template <typename... Args> std::string WHERE_AND(Args... args) {
+        std::string Result;
+        return WHERE_AND_(Result, args...);
+    }
+
     enum SqlComparison { EQ = 0, NEQ, LT, LTE, GT, GTE };
     enum SqlBinaryOp { AND = 0 , OR };