diff --git a/doc/releases/release-notes-4.1.rst b/doc/releases/release-notes-4.1.rst
index 3b821986a26..b47361a3803 100644
--- a/doc/releases/release-notes-4.1.rst
+++ b/doc/releases/release-notes-4.1.rst
@@ -126,6 +126,8 @@ Build system and Infrastructure
     as well as for ``--sub-test`` command line parameters (:github:`80088`).
   * The ``--no-detailed-test-id`` command line option also shortens Ztest Test Case names excluding
     its Test Scenario name prefix which is the same as the parent Test Suite id (:github:`82302`).
+    Twister XML reports have full testsuite name as ``testcase.classname property`` resolving
+    possible duplicate testcase elements in ``twister_report.xml`` testsuite container.
 
 Drivers and Sensors
 *******************
diff --git a/scripts/pylib/twister/twisterlib/reports.py b/scripts/pylib/twister/twisterlib/reports.py
index c64ddfefef3..5aec6566b0f 100644
--- a/scripts/pylib/twister/twisterlib/reports.py
+++ b/scripts/pylib/twister/twisterlib/reports.py
@@ -171,6 +171,7 @@ class Reporting:
             runnable = suite.get('runnable', 0)
             duration += float(handler_time)
             ts_status = TwisterStatus(suite.get('status'))
+            classname = PosixPath(suite.get("name","")).name
             for tc in suite.get("testcases", []):
                 status = TwisterStatus(tc.get('status'))
                 reason = tc.get('reason', suite.get('reason', 'Unknown'))
@@ -178,7 +179,6 @@ class Reporting:
 
                 tc_duration = tc.get('execution_time', handler_time)
                 name = tc.get("identifier")
-                classname = ".".join(name.split(".")[:2])
                 fails, passes, errors, skips = self.xunit_testcase(eleTestsuite,
                     name, classname, status, ts_status, reason, tc_duration, runnable,
                     (fails, passes, errors, skips), log, True)
@@ -252,6 +252,7 @@ class Reporting:
                 ):
                     continue
                 if full_report:
+                    classname = PosixPath(ts.get("name","")).name
                     for tc in ts.get("testcases", []):
                         status = TwisterStatus(tc.get('status'))
                         reason = tc.get('reason', ts.get('reason', 'Unknown'))
@@ -259,7 +260,6 @@ class Reporting:
 
                         tc_duration = tc.get('execution_time', handler_time)
                         name = tc.get("identifier")
-                        classname = ".".join(name.split(".")[:2])
                         fails, passes, errors, skips = self.xunit_testcase(eleTestsuite,
                             name, classname, status, ts_status, reason, tc_duration, runnable,
                             (fails, passes, errors, skips), log, True)