diff --git a/python-backend/api/main.py b/python-backend/api/main.py
index 163abfa..0f1592b 100644
--- a/python-backend/api/main.py
+++ b/python-backend/api/main.py
@@ -858,6 +858,27 @@ async def upload_csv(
             )
         )
 
+    # Failed-data honesty (Kisa 2026-07-07): a row the scoring engine drops
+    # (e.g. a component with no coverage rule) must appear in the skipped
+    # list, never vanish — and BEFORE persistence so the stored batch record
+    # matches the count the supplier saw. Signal never acts on rows whose
+    # required information was not provided; it also never hides them.
+    from core.dedup import _as_date as _asd
+
+    processed_groups = {
+        (r.patient_id, r.device_type, _asd(r.last_shipment_date))
+        for r in results
+    }
+    _reported_drops = set()
+    for rec in records:
+        g = (rec.patient_id, rec.device_type, _asd(rec.shipment_date))
+        if g not in processed_groups and g not in _reported_drops:
+            _reported_drops.add(g)
+            skipped_reasons.append(
+                f"{rec.patient_id}: {rec.device_type} ({rec.component}) has "
+                "no coverage rule for this component — row not scored"
+            )
+
     # Use real user ID and db_conn where possible if we implement it, hardcoding
     # IP as 0.0.0.0 for now unless req object available
     from core.supabase_client import get_client
diff --git a/tests/test_worklist_readiness.py b/tests/test_worklist_readiness.py
index 282a394..bc541d3 100644
--- a/tests/test_worklist_readiness.py
+++ b/tests/test_worklist_readiness.py
@@ -513,6 +513,12 @@ def test_upload_skipped_record_leaves_no_phantom_line_in_stats():
     pids = {r["patient_id"] for r in body["records"]}
     assert pids == {"PT-OK-1"}  # transmitter row skipped by the engine
     assert body["readiness_stats"]["lines_total"] == 1
+    # Failed-data honesty: the dropped row is visible in the skipped list,
+    # never silently vanished (Kisa ruling 2026-07-07).
+    assert body["skipped"] >= 1
+    assert any(
+        "PT-TX-1" in r and "not scored" in r for r in body["skipped_reasons"]
+    )
 
 
 def test_upload_non_gradeable_rows_carry_no_verdict():