diff --git a/src/eckit/log/SysLog.cc b/src/eckit/log/SysLog.cc
index 98c5ffc54..e10304ad3 100644
--- a/src/eckit/log/SysLog.cc
+++ b/src/eckit/log/SysLog.cc
@@ -18,6 +18,7 @@
 #include "eckit/runtime/Main.h"
 
 #include "eckit/log/TimeStamp.h"
+#include "eckit/net/IPAddress.h"
 
 namespace eckit {
 
@@ -43,11 +44,26 @@ int SysLog::procid() const {
     return ::getpid();
 }
 
+
 std::string SysLog::structuredData() const {
+    if (software_.empty() && swVersion_.empty() && enterpriseId_.empty()) {
+        return std::string(1, nilvalue());
+    }
+    // RFC 5424 section 6.3 (only origin)
     std::ostringstream s;
-
-    /// @todo Implement the structured message meta-description as described in RFC5424 secion 6.3
-    s << nilvalue();
+    std::string ip = net::IPAddress::myIPAddress().asString();
+
+    s << "[origin ip=\"" << ip << "\"";
+    if (!enterpriseId_.empty()) {
+        s << " enterpriseId=\"" << enterpriseId_ << "\"";
+    }
+    if (!software_.empty()) {
+        s << " software=\"" << software_ << "\"";
+        if (!swVersion_.empty()) {
+            s << " swVersion=\"" << swVersion_ << "\"";
+        }
+    }
+    s << "]";
 
     return s.str();
 }
@@ -59,7 +75,7 @@ SysLog::operator std::string() const {
     static char sep = ' ';
 
     os  // RFC 5424 section 6.2 (Header)
-        << "<" << priotity() << ">" << version() << sep << timestamp() << sep << fqdn() << sep << appName() << sep
+        << "<" << priority() << ">" << version() << sep << timestamp() << sep << fqdn() << sep << appName() << sep
         << procid() << sep << msgid()
         << sep
         // RFC 5424 section 6.3
diff --git a/src/eckit/log/SysLog.h b/src/eckit/log/SysLog.h
index 28931e295..d88c31f53 100644
--- a/src/eckit/log/SysLog.h
+++ b/src/eckit/log/SysLog.h
@@ -72,7 +72,7 @@ class SysLog {
 
     SysLog(const std::string& msg, int msgid = 0, Facility f = SysLog::User, Severity s = SysLog::Info);
 
-    unsigned priotity() const { return facility_ * 8 + severity_; }
+    unsigned priority() const { return facility_ * 8 + severity_; }
 
     unsigned version() const { return 1; }
 
@@ -99,6 +99,11 @@ class SysLog {
         return s;
     }
 
+    /// Optional fields for structured data (RFC 5424 section 6.3)
+    void software(const std::string& software) { software_ = software; }
+    void swVersion(const std::string& version) { swVersion_ = version; }
+    void enterpriseId(const std::string& id) { enterpriseId_ = id; }
+
 private:  // methods
     void print(std::ostream& out) const;
 
@@ -112,6 +117,11 @@ class SysLog {
     int msgid_;
 
     std::string msg_;
+
+    // optional fields for structured data
+    std::string software_;
+    std::string swVersion_;
+    std::string enterpriseId_;
 };
 
 }  // namespace eckit
diff --git a/tests/log/CMakeLists.txt b/tests/log/CMakeLists.txt
index fbd95d313..58f9346bc 100644
--- a/tests/log/CMakeLists.txt
+++ b/tests/log/CMakeLists.txt
@@ -27,3 +27,7 @@ ecbuild_add_test( TARGET      eckit_test_log_user_channels
                   ENABLED     OFF
                   SOURCES     test_log_user_channels.cc
                   LIBS        eckit )
+
+ecbuild_add_test( TARGET      eckit_test_syslog
+                  SOURCES     test_syslog.cc
+                  LIBS        eckit )
\ No newline at end of file
diff --git a/tests/log/test_syslog.cc b/tests/log/test_syslog.cc
new file mode 100644
index 000000000..ab602a23a
--- /dev/null
+++ b/tests/log/test_syslog.cc
@@ -0,0 +1,84 @@
+/*
+ * (C) Copyright 1996- ECMWF.
+ *
+ * This software is licensed under the terms of the Apache Licence Version 2.0
+ * which can be obtained at http://www.apache.org/licenses/LICENSE-2.0.
+ * In applying this licence, ECMWF does not waive the privileges and immunities
+ * granted to it by virtue of its status as an intergovernmental organisation nor
+ * does it submit to any jurisdiction.
+ */
+
+#include <iostream>
+
+#include "eckit/log/SysLog.h"
+#include "eckit/testing/Test.h"
+
+using namespace std;
+using namespace eckit;
+using namespace eckit::testing;
+
+namespace eckit::test {
+
+//----------------------------------------------------------------------------------------------------------------------
+
+CASE("test_priority") {
+    SysLog log("Test message", 0, SysLog::Local7, SysLog::Info);
+    std::string logString        = static_cast<std::string>(log);
+    std::string expectedPriority = "<" + std::to_string(log.priority()) + ">";
+    EXPECT(logString.find(expectedPriority) != std::string::npos);
+}
+
+//----------------------------------------------------------------------------------------------------------------------
+
+CASE("test_timezone") {
+    SysLog log("Test message", 0, SysLog::Local7, SysLog::Info);
+    std::string logString = static_cast<std::string>(log);
+    // Check if 'Z' UTC indicator is present
+    EXPECT(logString.find("Z") != std::string::npos);
+    // Check if 'T' separator is present
+    EXPECT(logString.find("T") != std::string::npos);
+}
+
+//----------------------------------------------------------------------------------------------------------------------
+
+CASE("test_appname") {
+    SysLog log("Test message", 0, SysLog::Local7, SysLog::Info);
+    EXPECT(log.appName() == Main::instance().name());
+
+    // Change the appName and check if it persists
+    log.appName("test_app");
+    std::string logString = static_cast<std::string>(log);
+    EXPECT(logString.find("test_app") != std::string::npos);
+
+    // Create a new SysLog instance and check if it retains the original appName
+    SysLog newLog("New message", 2, SysLog::Local7, SysLog::Info);
+    EXPECT(newLog.appName() == Main::instance().name());
+}
+
+//----------------------------------------------------------------------------------------------------------------------
+
+CASE("test_without_structured_data") {
+    SysLog log("Test message", 0, SysLog::Local7, SysLog::Info);
+    std::string logString = static_cast<std::string>(log);
+    // Check if structured data is not present
+    EXPECT(logString.find("[origin") == std::string::npos);
+}
+
+//----------------------------------------------------------------------------------------------------------------------
+CASE("test_with_structured_data") {
+    SysLog log("Test message", 0, SysLog::Local7, SysLog::Info);
+    log.software("log_test");
+    log.swVersion("1.0.0");
+    log.enterpriseId("7464");
+    std::string logString = static_cast<std::string>(log);
+    EXPECT(logString.find("enterpriseId=\"7464\"") != std::string::npos);
+    EXPECT(logString.find("software=\"log_test\"") != std::string::npos);
+    EXPECT(logString.find("swVersion=\"1.0.0\"") != std::string::npos);
+}
+//----------------------------------------------------------------------------------------------------------------------
+
+}  // namespace eckit::test
+
+int main(int argc, char** argv) {
+    return run_tests(argc, argv);
+}