diff --git a/onprc_ehr/resources/queries/study/ParentageDamMismatch.sql b/onprc_ehr/resources/queries/study/ParentageDamMismatch.sql
index f9e07f467..b43f54b41 100644
--- a/onprc_ehr/resources/queries/study/ParentageDamMismatch.sql
+++ b/onprc_ehr/resources/queries/study/ParentageDamMismatch.sql
@@ -13,49 +13,64 @@
  * 6. Excludes old parentage entries, enddate IS BLANK
 */
 
+/*
+ Modifications by Kolli, June 2026
+ Refer tkt# 14891 for details
+
+ * 1. Remove cases in which the ID has a surrogate dam entered in prime. (There are several but 41043 is one example)
+ * 2. Remove cases in which the observed dam is "unknown"
+ * 3. Remove cases in which the observed dam ID is not an ONPRC. E.g. there are several NEPRC IDs of the format ###-####.
+ */
+
 SELECT
     d.Id,
     d.Id.curLocation.area AS Area,
-    coalesce(p2.parent, '') as geneticDam,
-    coalesce(b.dam, '') as observedDam
+    gd.geneticDam,
+    b.dam AS observedDam
+
 FROM study.demographics d
 
-    LEFT JOIN (
-    SELECT
-        p2.Id,
-        MAX(p2.parent) AS parent
-    FROM study.parentage p2
-    WHERE (p2.method = 'Genetic' OR p2.method = 'Provisional Genetic')
-      AND p2.relationship = 'Dam'
-      AND p2.enddate IS NULL
-    GROUP BY p2.Id
-) p2 ON d.Id = p2.Id
-
-    LEFT JOIN (
+LEFT JOIN (
     SELECT
-        p3.Id,
-        MAX(p3.parent) AS parent
-    FROM study.parentage p3
-    WHERE p3.relationship = 'Foster Dam'
-      AND p3.enddate IS NULL
-    GROUP BY p3.Id
-) p3 ON d.Id = p3.Id
-
-    LEFT JOIN study.birth b
-        ON b.Id = d.Id
-
-WHERE d.calculated_status.code IN ('Alive', 'Dead') AND d.qcstate = 18
-    /* exclude foster-dam cases (NULL or blank only) */
-  AND COALESCE(RTRIM(LTRIM(CAST(p3.parent AS VARCHAR(50)))), '') = ''
-
-    /* exclude blank observed dam */
+        p.Id,
+        MAX(p.parent) AS geneticDam
+    FROM study.parentage p
+    WHERE p.relationship = 'Dam'
+      AND p.method IN ('Genetic', 'Provisional Genetic')
+      AND p.enddate IS NULL
+    GROUP BY p.Id
+) gd
+    ON gd.Id = d.Id
+
+LEFT JOIN study.birth b
+    ON b.Id = d.Id
+
+WHERE d.calculated_status.code IN ('Alive', 'Dead')
+  AND d.qcstate = 18
+
+    /* exclude animals with active Foster Dam  */
+    /* And, exclude animals with active Surrogate Dam */
+  AND NOT EXISTS (
+    SELECT 1
+    FROM study.parentage fd
+    WHERE fd.Id = d.Id
+      AND fd.relationship IN ('Foster Dam', 'Surrogate Dam')
+      AND fd.enddate IS NULL
+      AND COALESCE(RTRIM(LTRIM(CAST(fd.parent AS VARCHAR(50)))), '') <> ''
+  )
+
+    /* observed dam is not blank */
   AND COALESCE(RTRIM(LTRIM(CAST(b.dam AS VARCHAR(50)))), '') <> ''
 
-    /* exclude blank genetic dam */
-  AND COALESCE(RTRIM(LTRIM(CAST(p2.parent AS VARCHAR(50)))), '') <> ''
+    /* observed dam is not unknown */
+  AND LOWER(COALESCE(RTRIM(LTRIM(CAST(b.dam AS VARCHAR(50)))), '')) <> 'unknown'
 
-    /* mismatch observed vs genetic */
-  AND COALESCE(RTRIM(LTRIM(CAST(b.dam AS VARCHAR(50)))), '') <>
-      COALESCE(RTRIM(LTRIM(CAST(p2.parent AS VARCHAR(50)))), '')
+    /* observed dam is an ONPRC ID, not external format like ###-#### */
+  AND COALESCE(RTRIM(LTRIM(CAST(b.dam AS VARCHAR(50)))), '') NOT LIKE '%-%'
 
+    /* genetic dam is not blank */
+  AND COALESCE(RTRIM(LTRIM(CAST(gd.geneticDam AS VARCHAR(50)))), '') <> ''
 
+    /* observed dam does not match genetic dam */
+  AND COALESCE(RTRIM(LTRIM(CAST(b.dam AS VARCHAR(50)))), '') <>
+      COALESCE(RTRIM(LTRIM(CAST(gd.geneticDam AS VARCHAR(50)))), '');