diff --git a/doc/rst/versions/5.13/compatibility_table.txt b/doc/rst/versions/5.13/compatibility_table.txt
index 038b8041ac..e42764e967 100644
--- a/doc/rst/versions/5.13/compatibility_table.txt
+++ b/doc/rst/versions/5.13/compatibility_table.txt
@@ -24,6 +24,10 @@
 
      - * **API**: downwards compatible.
          
+         A lot of deprecations were added.
+         Users should make sure to only use non-deprecated API and files in order to later make upgrading to eCAL 6 easier.
+         Deprecations can be found :ref:`in this document <compatibility_details_5_13_deprecations>`
+         
        * **ABI**: not compatible
 
    * - Tools
diff --git a/doc/rst/versions/5.13/deprecation.rst b/doc/rst/versions/5.13/deprecation.rst
new file mode 100644
index 0000000000..648e7e115a
--- /dev/null
+++ b/doc/rst/versions/5.13/deprecation.rst
@@ -0,0 +1,323 @@
+:orphan:
+
+.. _compatibility_details_5_13_deprecations:
+
+======================
+eCAL 5.13 Deprecations
+======================
+
+All API functions (C & C++) deprecated that are no longer part of the
+future eCAL6 API.
+
+Deprecated header files
+=======================
+
+- :file:`cimpl/ecal_event_cimpl.h`
+- :file:`cimpl/ecal_proto_dyn_json_subscriber_cimpl.h`
+- :file:`cimpl/ecal_qos_cimpl.h`
+- :file:`ecal_clang.h`
+- :file:`ecal_event.h`
+- :file:`ecal_eventhandle.h`
+- :file:`ecal_qos.h`
+- :file:`ecal_timed_cb.h`
+
+Deprecated API
+==============
+
+- :file:`cimpl/ecal_callback_cimpl.h`:
+  
+  .. code-block:: cpp
+  
+     enum eCAL_Subscriber_Event
+     {
+       sub_event_none              = 0,
+       sub_event_connected         = 1,
+       sub_event_disconnected      = 2,
+       sub_event_dropped           = 3,
+       sub_event_timeout           = 4,         //!< deprecated, will be removed in future eCAL versions
+       sub_event_corrupted         = 5,
+       sub_event_update_connection = 6,
+     };
+  
+     struct SPubEventCallbackDataC
+     {
+       enum eCAL_Publisher_Event  type;
+       long long                  time;
+       long long                  clock;
+       const char*                tid;
+       const char*                tname;
+       const char*                tencoding;
+       const char*                tdesc;
+  
+       const char*                ttype;        //!< deprecated, please use new tname + tencoding fields
+     };
+  
+     struct SSubEventCallbackDataC
+     {
+       enum eCAL_Subscriber_Event type;
+       long long                  time;
+       long long                  clock;
+       const char*                tid;
+       const char*                tname;
+       const char*                tencoding;
+       const char*                tdesc;
+  
+       const char*                ttype;        //!< deprecated, please use new tname + tencoding fields
+     };
+  
+- :file:`cimpl/ecal_client_cimpl.h`:
+  
+  .. code-block:: cpp
+  
+     int eCAL_Client_AddResponseCallbackC(ECAL_HANDLE handle_, ResponseCallbackCT callback_, void* par_);
+  
+- :file:`cimpl/ecal_init_cimpl.h`:
+  
+  .. code-block:: cpp
+  
+     #define eCAL_Init_Publisher   0x01
+     #define eCAL_Init_Subscriber  0x02
+     #define eCAL_Init_Service     0x04
+     #define eCAL_Init_Monitoring  0x08
+     #define eCAL_Init_Logging     0x10
+     #define eCAL_Init_TimeSync    0x20
+     #define eCAL_Init_RPC         0x40         /*!< deprecated, will be removed in future eCAL versions */
+     #define eCAL_Init_ProcessReg  0x80
+  
+- :file:`cimpl/ecal_log_cimpl.h`:
+  
+  .. code-block:: cpp
+  
+     void eCAL_Logging_StartCoreTimer();
+     void eCAL_Logging_StopCoreTimer();
+     void eCAL_Logging_SetCoreTime(double time_);
+     double eCAL_Logging_GetCoreTime();
+  
+- :file:`cimpl/ecal_monitoring_cimpl.h`:
+  
+     int eCAL_Monitoring_PubMonitoring(int state_, const char* name_);
+     int eCAL_Monitoring_PubLogging(int state_, const char* name_);
+  
+- :file:`cimpl/ecal_process_cimpl.h`:
+  
+  .. code-block:: cpp
+      
+     int eCAL_Process_GetHostID();
+     float eCAL_Process_GetProcessCpuUsage();
+     unsigned long eCAL_Process_GetProcessMemory();
+     long long eCAL_Process_GetSClock();
+     long long eCAL_Process_GetSBytes();
+     long long eCAL_Process_GetWClock();
+     long long eCAL_Process_GetWBytes();
+     long long eCAL_Process_GetRClock();
+     long long eCAL_Process_GetRBytes();
+  
+- :file:`cimpl/ecal_publisher_cimpl.h`:
+  
+  .. code-block:: cpp
+  
+     int eCAL_Pub_SetQOS(ECAL_HANDLE handle_, struct SWriterQOSC qos_);
+     int eCAL_Pub_GetQOS(ECAL_HANDLE handle_, struct SWriterQOSC* qos_);
+     int eCAL_Pub_SetMaxBandwidthUDP(ECAL_HANDLE handle_, long bandwidth_);
+  
+- :file:`cimpl/ecal_server_cimpl.h`:
+  
+  .. code-block:: cpp 
+  
+     int eCAL_Server_AddMethodCallbackC(ECAL_HANDLE handle_, const char* method_, const char* req_type_, const char* resp_type_, MethodCallbackCT callback_, void* par_);
+     int eCAL_Server_RemMethodCallbackC(ECAL_HANDLE handle_, const char* method_);
+  
+- :file:`cimpl/ecal_subscriber_cimpl.h`:
+  
+  .. code-block:: cpp
+  
+     int eCAL_Sub_SetQOS(ECAL_HANDLE handle_, struct SReaderQOSC qos_);
+     int eCAL_Sub_GetQOS(ECAL_HANDLE handle_, struct SReaderQOSC* qos_);
+     int eCAL_Sub_SetTimeout(ECAL_HANDLE handle_, int timeout_);
+  
+- :file:`cimpl/ecal_tlayer_cimpl.h`:
+  
+  .. code-block:: cpp
+  
+     enum eTransportLayerC
+     {
+       tlayer_none       = 0,
+       tlayer_udp_mc     = 1,
+       tlayer_shm        = 4,
+       tlayer_tcp        = 5,
+       tlayer_inproc     = 42,  /*!< deprecated, whole layer will be removed in future eCAL versions */
+       tlayer_all        = 255
+     };
+  
+- :file:`cimpl/ecal_util_cimpl.h`:
+  
+  .. code-block:: cpp
+  
+     int eCAL_Util_GetTypeName(const char* topic_name_, void* topic_type_, int topic_type_len_);
+     int eCAL_Util_GetDescription(const char* topic_name_, void* topic_desc_, int topic_desc_len_);
+  
+- :file:`ecal_callback.h`:
+  
+    struct SPubEventCallbackData
+      {
+        eCAL_Publisher_Event type;
+        long long            time;
+        long long            clock;
+        std::string          tid;
+        std::string          ttype;       //!< deprecated, please use new tdatatype field
+        std::string          tdesc;       //!< deprecated, please use new tdatatype field 
+
+        SDataTypeInformation tdatatype;
+      };
+  
+    struct SSubEventCallbackData
+      {
+        eCAL_Subscriber_Event type;
+        long long             time;
+        long long             clock;
+        std::string           tid;
+        std::string           ttype;       //!< deprecated, please use new tdatatype field
+        std::string           tdesc;       //!< deprecated, please use new tdatatype field 
+
+        SDataTypeInformation  tdatatype;
+      };
+  
+- :file:`ecal_log.h`:
+  
+  .. code-block:: cpp
+  
+     void StartCoreTimer();
+     void StopCoreTimer();
+     void SetCoreTime(double time_);
+     double GetCoreTime();
+  
+- :file:`ecal_monitoring.h`:
+  
+  .. code-block:: cpp
+  
+     int GetMonitoring(std::string& mon_);
+     int PubMonitoring(bool state_, std::string name_ = "ecal.monitoring");
+     int PubLogging(bool state_, std::string name_ = "ecal.logging");
+  
+- :file:`ecal_process.h`:
+  
+  .. code-block:: cpp
+  
+     int GetHostID();
+     float GetProcessCpuUsage();
+     unsigned long GetProcessMemory();
+     long long GetWClock();
+     long long GetWBytes();
+     long long GetRClock();
+     long long GetRBytes();
+  
+- :file:`ecal_publisher.h`:
+  
+  .. code-block:: cpp
+  
+     CPublisher(const std::string& topic_name_, const std::string& topic_type_, const std::string& topic_desc_ = "");
+     bool Create(const std::string& topic_name_, const std::string& topic_type_, const std::string& topic_desc_ = "");
+     bool SetTypeName(const std::string& topic_type_name_);
+     bool SetDescription(const std::string& topic_desc_);
+     bool SetQOS(const QOS::SWriterQOS& qos_);
+     QOS::SWriterQOS GetQOS();
+     bool SetMaxBandwidthUDP(long bandwidth_);
+     std::string GetTypeName() const;
+     std::string GetDescription() const;
+  
+- :file:`ecal_subscriber.h`:
+  
+  .. code-block:: cpp
+  
+     CSubscriber(const std::string& topic_name_, const std::string& topic_type_, const std::string& topic_desc_ = "");
+     bool Create(const std::string& topic_name_, const std::string& topic_type_, const std::string& topic_desc_ = "");
+     bool SetQOS(const QOS::SReaderQOS& qos_);
+     QOS::SReaderQOS GetQOS();
+     std::string GetTypeName() const;
+     std::string GetDescription() const;
+     bool SetTimeout(int timeout_);
+  
+- :file:`ecal_tlayer.h`:
+  
+  .. code-block:: cpp
+  
+     enum eTransportLayer
+     {
+       tlayer_none       = 0,
+       tlayer_udp_mc     = 1,
+       tlayer_shm        = 4,
+       tlayer_tcp        = 5,
+       tlayer_inproc     = 42,  //!< deprecated, whole layer will be removed in future eCAL versions
+       tlayer_all        = 255
+     };
+  
+     struct ECAL_API STLayer
+     {
+       STLayer()
+       {
+         sm_udp_mc  = smode_none;
+         sm_shm     = smode_none;
+         sm_inproc  = smode_none;
+         sm_tcp     = smode_none;
+       }
+       eSendMode sm_udp_mc;
+       eSendMode sm_shm;
+       eSendMode sm_inproc;  //!< deprecated, whole layer will be removed in future eCAL versions */
+       eSendMode sm_tcp;
+     };
+  
+- :file:`ecal_util.h`:
+  
+     bool GetTopicTypeName(const std::string& topic_name_, std::string& topic_type_);
+     std::string GetTopicTypeName(const std::string& topic_name_);
+     bool GetTopicDescription(const std::string& topic_name_, std::string& topic_desc_);
+     std::string GetTopicDescription(const std::string& topic_name_);
+     std::string GetDescription(const std::string& topic_name_);
+  
+- :file:`msg/capnproto/dynamic.h`:
+  
+    std::string GetTypeName() const;
+  
+- :file:`msg/capnproto/subscriber.h`:
+  
+    std::string GetTypeName() const;
+  
+- :file:`msg/protobuf/publisher.h`:
+  
+    std::string GetTypeName() const;
+    std::string GetDescription() const;
+  
+- :file:`msg/string/publisher.h`:
+  
+    CPublisher(const std::string& topic_name_, const std::string& topic_type_, const std::string& topic_desc_);
+  
+- :file:`msg/publisher.h`:
+  
+    CMsgPublisher(const std::string& topic_name_, const std::string& topic_type_, const std::string& topic_desc_ = "");
+    bool Create(const std::string& topic_name_, const std::string& topic_type_ = "", const std::string& topic_desc_ = "");
+    virtual std::string GetTypeName() const;
+    virtual std::string GetDescription() const;
+  
+- :file:`msg/subscriber.h`:
+  
+    CMsgSubscriber(const std::string& topic_name_, const std::string& topic_type_ = "", const std::string& topic_desc_ = "");
+    bool Create(const std::string& topic_name_, const std::string& topic_type_ = "", const std::string& topic_desc_ = "")
+    virtual std::string GetTypeName() const;
+    virtual std::string GetDescription() const;
+  
+Added API
+=========
+
+- :file:`ecal_subscriber_cimpl.h`:
+  
+  .. code-block:: cpp
+  
+     ECALC_API int eCAL_Sub_GetTypeName(ECAL_HANDLE handle_, void* buf_, int buf_len_);
+     ECALC_API int eCAL_Sub_GetEncoding(ECAL_HANDLE handle_, void* buf_, int buf_len_);
+  
+- :file:`ecal_util_cimpl.h`:
+
+  .. code-block:: cpp
+
+     ECALC_API int eCAL_Util_GetTopicEncoding(const char* topic_name_, void* topic_encoding_, int topic_encoding_len_);
+     ECALC_API int eCAL_Util_GetTopicDescription(const char* topic_name_, void* topic_desc_, int topic_desc_len_);
diff --git a/doc/rst/versions/5.13/whats_new.rst b/doc/rst/versions/5.13/whats_new.rst
index c0dbf20e5d..62df8fee57 100644
--- a/doc/rst/versions/5.13/whats_new.rst
+++ b/doc/rst/versions/5.13/whats_new.rst
@@ -14,7 +14,6 @@ eCAL 5.13 was released in March 2024.
 New features
 ============
 
-
 - Check out the `entire 5.13.0 changelog <https://github.com/eclipse-ecal/ecal/releases/tag/v5.13.0>`_!.
 
 Compatibility table