diff --git a/container/FixedMap.h b/container/FixedMap.h
index 0b84bf4e..7f3d28f7 100644
--- a/container/FixedMap.h
+++ b/container/FixedMap.h
@@ -6,7 +6,11 @@
 #include <utility>
 
 /**
- * \ingroup container
+ * @brief 	Map implementation for maps with a pre-defined size.
+ * @details Can be initialized with desired maximum size.
+ * 	        Iterator is used to access <key,value> pair and
+ * 	        iterate through map entries. Complexity O(n).
+ * @ingroup container
  */
 template<typename key_t, typename T>
 class FixedMap: public SerializeIF {
@@ -52,12 +56,24 @@ public:
 			return ArrayList<std::pair<key_t, T>, uint32_t>::Iterator::value->second;
 		}
 
+		// -> operator overloaded, can be used to access value
 		T *operator->() {
 			return &ArrayList<std::pair<key_t, T>, uint32_t>::Iterator::value->second;
 		}
 
+		// Can be used to access the key of the iterator
+		key_t first() {
+			return ArrayList<std::pair<key_t, T>, uint32_t>::Iterator::value->first;
+		}
+
+		// Alternative to access value, similar to std::map implementation
+		T second() {
+			return ArrayList<std::pair<key_t, T>, uint32_t>::Iterator::value->second;
+		}
 	};
 
+
+
 	Iterator begin() const {
 		return Iterator(&theMap[0]);
 	}
@@ -72,10 +88,10 @@ public:
 
 	ReturnValue_t insert(key_t key, T value, Iterator *storedValue = NULL) {
 		if (exists(key) == HasReturnvaluesIF::RETURN_OK) {
-			return KEY_ALREADY_EXISTS;
+			return FixedMap::KEY_ALREADY_EXISTS;
 		}
 		if (_size == theMap.maxSize()) {
-			return MAP_FULL;
+			return FixedMap::MAP_FULL;
 		}
 		theMap[_size].first = key;
 		theMap[_size].second = value;
@@ -87,7 +103,7 @@ public:
 	}
 
 	ReturnValue_t insert(std::pair<key_t, T> pair) {
-		return insert(pair.fist, pair.second);
+		return insert(pair.first, pair.second);
 	}
 
 	ReturnValue_t exists(key_t key) const {
@@ -148,8 +164,17 @@ public:
 		return theMap.maxSize();
 	}
 
-	virtual ReturnValue_t serialize(uint8_t** buffer, uint32_t* size,
-			const uint32_t max_size, bool bigEndian) const {
+	bool full() {
+		if(_size == theMap.maxSize()) {
+			return true;
+		}
+		else {
+			return false;
+		}
+	}
+
+	virtual ReturnValue_t serialize(uint8_t** buffer, size_t* size,
+			const size_t max_size, bool bigEndian) const {
 		ReturnValue_t result = SerializeAdapter<uint32_t>::serialize(&this->_size,
 				buffer, size, max_size, bigEndian);
 		uint32_t i = 0;
@@ -163,7 +188,7 @@ public:
 		return result;
 	}
 
-	virtual uint32_t getSerializedSize() const {
+	virtual size_t getSerializedSize() const {
 		uint32_t printSize = sizeof(_size);
 		uint32_t i = 0;
 
@@ -176,7 +201,7 @@ public:
 		return printSize;
 	}
 
-	virtual ReturnValue_t deSerialize(const uint8_t** buffer, int32_t* size,
+	virtual ReturnValue_t deSerialize(const uint8_t** buffer, ssize_t* size,
 			bool bigEndian) {
 		ReturnValue_t result = SerializeAdapter<uint32_t>::deSerialize(&this->_size,
 				buffer, size, bigEndian);