diff --git a/beesdoo_shift_attendance/__manifest__.py b/beesdoo_shift_attendance/__manifest__.py
index 21dd2f3..fa58261 100644
--- a/beesdoo_shift_attendance/__manifest__.py
+++ b/beesdoo_shift_attendance/__manifest__.py
@@ -11,7 +11,7 @@
     "author": "Elouan Le Bars, Coop IT Easy SCRLfs",
     "website": "https://github.com/beescoop/Obeesdoo",
     "category": "Cooperative management",
-    "version": "12.0.1.0.1",
+    "version": "12.0.1.0.2",
     "depends": [
         "beesdoo_base",
         "beesdoo_shift",
diff --git a/beesdoo_shift_attendance/models/attendance_sheet.py b/beesdoo_shift_attendance/models/attendance_sheet.py
index 9cfeca6..127f6d1 100644
--- a/beesdoo_shift_attendance/models/attendance_sheet.py
+++ b/beesdoo_shift_attendance/models/attendance_sheet.py
@@ -1,9 +1,14 @@
+import logging
+
 from datetime import date, datetime, timedelta
 
 from odoo import _, api, fields, models
 from odoo.exceptions import UserError
 
 
+_logger = logging.getLogger(__name__)
+
+
 class AttendanceSheetShift(models.Model):
     """
     Partial copy of Task class to use in AttendanceSheet,
@@ -472,6 +477,24 @@ class AttendanceSheet(models.Model):
         # Expected shifts status update
         for expected_shift in self.expected_shift_ids:
             actual_shift = expected_shift.task_id
+            if not actual_shift:
+                _logger.warning(
+                    "The shift linked to the expected shift with id %s "
+                    "for the partner id %s does not exist anymore."
+                    "The expected shift is ignored during the validation "
+                    "process of the attendance sheet."
+                    % (expected_shift.id, expected_shift.worker_id.id)
+                )
+                self._message_log(
+                    body=_(
+                        "The shift linked to the expected shift of %s "
+                        "does exist any more."
+                        "This expected shift is ignored in the "
+                        "validation process."
+                        % expected_shift.worker_id.name
+                    )
+                )
+                continue
             actual_shift.replaced_id = expected_shift.replaced_id
             actual_shift.state = expected_shift.state