diff --git a/trdp/src/api/iec61375-2-3.h b/trdp/src/api/iec61375-2-3.h
index 254ec99e..6a9143c2 100644
--- a/trdp/src/api/iec61375-2-3.h
+++ b/trdp/src/api/iec61375-2-3.h
@@ -14,6 +14,7 @@
  /*
  * $Id$
  *
+ *      BL 2020-02-26: Ticket #319 Protocol Version is defined twice
  *      BL 2019-08-15: Ticket #273 Units for certain standard timeout values inconsistent
  *      BL 2019-02-01: Ticket #234 Correcting Statistics ComIds
  *      BL 2018-01-29: Ticket #188 Typo in the TRDP_VAR_SIZE definition
@@ -92,8 +93,9 @@
 #define TRDP_MD_TCP_PORT                    17225u                      /**< IANA assigned message data TCP port    */
 #endif
 
-#define TRDP_PROTO_VER                      0x0100u                     /**< Protocol version                       */
+/**  Protocol version is defined in trdp_private.h */
 #define TRDP_PROTOCOL_VERSION_CHECK_MASK    0xFF00u                     /**< Version check, two digits are relevant */
+
 #define TRDP_SESS_ID_SIZE                   16u                         /**< Session ID (UUID) size in MD header    */
 #define TRDP_USR_URI_SIZE                   32u                         /**< max. User URI size in MD header        */
 
diff --git a/trdp/src/common/tlc_if.c b/trdp/src/common/tlc_if.c
index f94557ad..1660c8f4 100644
--- a/trdp/src/common/tlc_if.c
+++ b/trdp/src/common/tlc_if.c
@@ -17,6 +17,7 @@
 /*
 * $Id$
 *
+*      BL 2020-01-10: Undoing svn revision output, would reflect file revision, only.
 *      BL 2019-11-06: Ticket #289: Changed the max. returnedwait time of tlc_getInterval to 1s (instead of 1000s)
 *      BL 2019-10-25: Ticket #288 Why is not tlm_reply() exported from the DLL
 *      BL 2019-10-15: Ticket #282 Preset index table size and depth to prevent memory fragmentation
@@ -1446,7 +1447,7 @@ EXT_DECL TRDP_ERR_T tlc_process (
  */
 EXT_DECL const char *tlc_getVersionString (void)
 {
-    static CHAR8 version[32];
+    static CHAR8 version[16];
 
     (void) vos_snprintf(version,
                         sizeof(version),
diff --git a/trdp/src/common/trdp_private.h b/trdp/src/common/trdp_private.h
index 3f123082..944e1684 100644
--- a/trdp/src/common/trdp_private.h
+++ b/trdp/src/common/trdp_private.h
@@ -17,6 +17,7 @@
 /*
  * $Id$
  *
+ *      BL 2020-02-26: Ticket #319 Protocol Version is defined twice
  *      AÖ 2020-01-10: Ticket #293 Minor fix in the macro, added spaces to avoid " to be part of the final string.
  *      BL 2020-01-10: Ticket #293 Avoid having version numbering in different places! Makro for version string (DLL) changed.
  *      AÖ 2019-11-14: Ticket #293 Add version to TCNOpen dll <-- !!! should be rejected! Use the function in tlc_if.c !!!
@@ -107,8 +108,11 @@
 
 #define TRDP_IF_WAIT_FOR_READY          120u        /**< 120 seconds (120 tries each second to bind to an IP address) */
 
-#undef  TRDP_PROTO_VER
-#define TRDP_PROTO_VER                  0x0101u                     /**< compatible protocol version with service Id  */
+#ifdef SOA_SUPPORT
+#define TRDP_PROTO_VER      0x0101u             /**< compatible protocol version using reserved field as serviceId    */
+#else
+#define TRDP_PROTO_VER      0x0100u             /**< standard protocol version                                        */
+#endif
 
 /***********************************************************************************************************************
  * TYPEDEFS