diff --git a/README.md b/README.md
index 53dca5c9..e1a1852e 100644
--- a/README.md
+++ b/README.md
@@ -796,3 +796,45 @@ Either wait for scheduled event to occur or manually execute via:
 ```shell
 fw run evans-pres-repr
 ```
+
+## duplicate-instance-report
+
+### Duplicate Instrance Report Workflow (Scheduled)
+
+This workflow emails a CSV after connects, queries, and disconnects from LDP.
+
+It has a signle query to build the report.
+
+Requires following path `/mnt/workflows/${tenantId}/duplicate-instance-report` to save `instance-report-report-${timestamp}.csv` to.
+
+
+These variables are required when building and running the workflow:
+
+| Variable Name                  | Allowed Values | Brief Description |
+| ------------------------------ | -------------- | ----------------- |
+| ldp-url                        | URL            | LDP URL. |
+| ldp-user                       | string         | LDP login username. |
+| ldp-password                   | string         | LDP login password. |
+| duplicate-instance-report-from | e-mail address | The e-mail address of the report sender. |
+| duplicate-instance-report-to   | e-mail address | The e-mail address of the report recipient. |
+
+The scheduled event is for ...
+
+```shell
+fw config set ldp-url ***
+fw config set ldp-user ***
+fw config set ldp-password ***
+fw config set duplicate-instance-report-from ***
+fw config set duplicate-instance-report-to ***
+```
+
+To build and activate:
+```shell
+fw build duplicate-instance-report
+fw activate duplicate-instance-report
+```
+
+Either wait for scheduled event to occur or manually execute via:
+```shell
+fw run duplicate-instance-report
+```
diff --git a/duplicate-instance-report/nodes/connectToLdp.json b/duplicate-instance-report/nodes/connectToLdp.json
new file mode 100644
index 00000000..63809590
--- /dev/null
+++ b/duplicate-instance-report/nodes/connectToLdp.json
@@ -0,0 +1,13 @@
+{
+  "id": "11f065f0-f1ea-47ed-abc9-146099572e7b",
+  "name": "Connect LDP",
+  "description": "Connect to the LDP.",
+  "deserializeAs": "DatabaseConnectionTask",
+  "inputVariables": [],
+  "outputVariable": {},
+  "designation": "ldp",
+  "url": "{{{ldp-url}}}",
+  "username": "{{{ldp-user}}}",
+  "password": "{{{ldp-password}}}",
+  "asyncBefore": true
+}
diff --git a/duplicate-instance-report/nodes/disconnectFromLDP.json b/duplicate-instance-report/nodes/disconnectFromLDP.json
new file mode 100644
index 00000000..f1300cad
--- /dev/null
+++ b/duplicate-instance-report/nodes/disconnectFromLDP.json
@@ -0,0 +1,10 @@
+{
+  "id": "db806bf5-49b8-4f8a-bf96-fc0258d3c31e",
+  "name": "Disconnect LDP",
+  "description": "Disconnect from the LDP.",
+  "deserializeAs": "DatabaseDisconnectTask",
+  "inputVariables": [],
+  "outputVariable": {},
+  "designation": "ldp",
+  "asyncBefore": true
+}
diff --git a/duplicate-instance-report/nodes/email.json b/duplicate-instance-report/nodes/email.json
new file mode 100644
index 00000000..ac7a5423
--- /dev/null
+++ b/duplicate-instance-report/nodes/email.json
@@ -0,0 +1,29 @@
+{
+  "id": "da165c76-b891-4d01-9fbb-f8da1b1a6d12",
+  "name": "Email Duplicate Instance Report",
+  "description": "Email CSV with duplicate instances hrids and match criterium.",
+  "deserializeAs": "EmailTask",
+  "inputVariables": [
+    {
+      "key": "timestamp",
+      "type": "PROCESS"
+    },
+    {
+      "key": "tenantId",
+      "type": "PROCESS"
+    },
+    {
+      "key": "count",
+      "type": "PROCESS"
+    }
+  ],
+  "outputVariable": {},
+  "mailFrom": "{{{duplicate-instance-report-from}}}",
+  "mailTo": "{{{duplicate-instance-report-to}}}",
+  "mailText": "The Instance Duplication Report has completed, see the results attached.\n${count} instance matches found",
+  "mailMarkup": "<p>The Instance Duplication Report has completed, see the results attached.</p><br/>${count} instance matches found",
+  "mailSubject": "Instance Duplication Report - LDP {{{ldp-url}}}",
+  "attachmentPath": "/mnt/workflows/${tenantId}/duplicate-instance-report/instance-report-report-${timestamp}.csv",
+  "includeAttachment": "${count}",
+  "asyncBefore": true
+}
diff --git a/duplicate-instance-report/nodes/end.json b/duplicate-instance-report/nodes/end.json
new file mode 100644
index 00000000..72be1aa8
--- /dev/null
+++ b/duplicate-instance-report/nodes/end.json
@@ -0,0 +1,6 @@
+{
+  "id": "3c9848b3-f5a4-4753-b916-2b73c88d9409",
+  "name": "End",
+  "description": "End of duplicate instance report workflow",
+  "deserializeAs": "EndEvent"
+}
diff --git a/duplicate-instance-report/nodes/query.json b/duplicate-instance-report/nodes/query.json
new file mode 100644
index 00000000..82a2f6a2
--- /dev/null
+++ b/duplicate-instance-report/nodes/query.json
@@ -0,0 +1,27 @@
+{
+  "id": "f548dd78-4cf5-4eb9-9b28-e4738470d44b",
+  "name": "Find Duplicates",
+  "description": "Query to return matching instances by identifier from LDP",
+  "deserializeAs": "DatabaseQueryTask",
+  "inputVariables": [
+    {
+      "key": "timestamp",
+      "type": "PROCESS"
+    },
+    {
+      "key": "tenantId",
+      "type": "PROCESS"
+    }
+  ],
+  "outputVariable": {
+    "key": "count",
+    "type": "PROCESS",
+    "spin": false
+  },
+  "designation": "ldp",
+  "outputPath": "/mnt/workflows/${tenantId}/duplicate-instance-report/instance-report-report-${timestamp}.csv",
+  "resultType": "CSV",
+  "includeHeader": true,
+  "query": "WITH call_number_from_holdings_ext AS (SELECT instance_hrid, TRIM(TRIM(CONCAT_WS(' ', call_number_prefix, call_number, call_number_suffix))) AS call_number FROM folio_reporting.instance_ext i JOIN folio_reporting.holdings_ext h ON i.instance_id = h.instance_id WHERE call_number IS NOT NULL AND call_number <> ''), call_number_matches AS (SELECT l.instance_hrid AS hrid, r.instance_hrid AS hrid2, 'call_number' AS match_type FROM call_number_from_holdings_ext l JOIN call_number_from_holdings_ext r ON l.call_number = r.call_number AND l.instance_hrid < r.instance_hrid), oclc_from_srs_marctab AS (SELECT instance_hrid, LTRIM(REGEXP_REPLACE(content, '[^0-9]', '', 'g'), '0') AS oclc FROM public.srs_marctab WHERE field = '035' AND ord = 1 AND sf IN ('a', 'z') AND content LIKE '(OCoLC)%'), oclc_matches AS (SELECT l.instance_hrid AS hrid, r.instance_hrid AS hrid2, 'oclc' AS match_type FROM oclc_from_srs_marctab l JOIN oclc_from_srs_marctab r ON l.oclc = r.oclc AND l.oclc <> '' AND l.instance_hrid < r.instance_hrid), isbn_from_instance_identifiers AS (SELECT instance_hrid, LEFT(RIGHT(REGEXP_REPLACE(identifier, ' .*', ''), 10), 9) AS isbn FROM folio_reporting.instance_identifiers WHERE identifier_type_name = 'ISBN' AND identifier IS NOT NULL AND identifier <> ''), isbn_matches AS (SELECT l.instance_hrid AS hrid, r.instance_hrid AS hrid2, 'isbn' AS match_type FROM isbn_from_instance_identifiers l JOIN isbn_from_instance_identifiers r ON l.isbn = r.isbn AND l.isbn <> '' AND l.instance_hrid < r.instance_hrid), lccn_from_instance_identifiers AS (SELECT instance_hrid, identifier AS lccn FROM folio_reporting.instance_identifiers WHERE identifier_type_name = 'LCCN' AND identifier IS NOT NULL AND identifier <> ''), lccn_matches AS (SELECT l.instance_hrid AS hrid, r.instance_hrid AS hrid2, 'lccn' AS match_type FROM lccn_from_instance_identifiers l JOIN lccn_from_instance_identifiers r ON l.lccn = r.lccn AND l.instance_hrid < r.instance_hrid), issn_from_srs_marctab AS (SELECT instance_hrid::text, content AS issn FROM public.srs_marctab WHERE field = '022' AND ord = 1 AND sf = 'a' AND content IS NOT NULL AND content <> ''), issn_matches AS (SELECT l.instance_hrid AS hrid, r.instance_hrid AS hrid2, 'issn' AS match_type FROM issn_from_srs_marctab l JOIN issn_from_srs_marctab r ON l.issn = r.issn AND l.instance_hrid < r.instance_hrid), all_matches AS (SELECT hrid, hrid2, match_type FROM call_number_matches UNION ALL SELECT hrid, hrid2, match_type FROM oclc_matches UNION ALL SELECT hrid, hrid2, match_type FROM isbn_matches UNION ALL SELECT hrid, hrid2, match_type FROM lccn_matches UNION ALL SELECT hrid, hrid2, match_type FROM issn_matches) SELECT hrid AS HRID, hrid2 AS HRID1, MAX(CASE WHEN match_type = 'oclc' THEN 'T' END) AS OCLC, MAX(CASE WHEN match_type = 'isbn' THEN 'T' END) AS ISBN, MAX(CASE WHEN match_type = 'lccn' THEN 'T' END) AS LCCN, MAX(CASE WHEN match_type = 'call_number' THEN 'T' END) AS CALL_NUMBER, MAX(CASE WHEN match_type = 'issn' THEN 'T' END) AS ISSN FROM all_matches GROUP BY hrid, hrid2",
+  "asyncBefore": true
+}
diff --git a/duplicate-instance-report/nodes/start.json b/duplicate-instance-report/nodes/start.json
new file mode 100644
index 00000000..8de9c00b
--- /dev/null
+++ b/duplicate-instance-report/nodes/start.json
@@ -0,0 +1,8 @@
+{
+  "id": "bf39c55f-1fd6-41a5-a98a-c28d6d05da9d",
+  "name": "Start",
+  "description": "Start of duplicate instance report workflow",
+  "type": "MESSAGE_CORRELATION",
+  "deserializeAs": "StartEvent",
+  "expression": "/events/workflow/duplicate-instance-workflow/start"
+}
diff --git a/duplicate-instance-report/setup.json b/duplicate-instance-report/setup.json
new file mode 100644
index 00000000..0967ef42
--- /dev/null
+++ b/duplicate-instance-report/setup.json
@@ -0,0 +1 @@
+{}
diff --git a/duplicate-instance-report/triggers/startTrigger.json b/duplicate-instance-report/triggers/startTrigger.json
new file mode 100644
index 00000000..c10ef6a4
--- /dev/null
+++ b/duplicate-instance-report/triggers/startTrigger.json
@@ -0,0 +1,9 @@
+{
+  "id": "4381df47-746c-466a-8beb-75ca91bad9f0",
+  "name": "Duplicate Instance Report Trigger",
+  "description": "Start to duplcate instance report workflow via POST request (temporary)",
+  "type": "MESSAGE_CORRELATE",
+  "method": "POST",
+  "deserializeAs": "EventTrigger",
+  "pathPattern": "/events/workflow/duplicate-instance-workflow/start"
+}
diff --git a/duplicate-instance-report/workflow.json b/duplicate-instance-report/workflow.json
new file mode 100644
index 00000000..b25c0d7f
--- /dev/null
+++ b/duplicate-instance-report/workflow.json
@@ -0,0 +1,22 @@
+{
+  "id": "93c90a8c-5b39-4499-a0bc-a24d75444a5c",
+  "name": "Duplicate Instance Report Workflow",
+  "description": "Identify and report duplicate instances by OCLC, ISBN, ISSN, LCCN, and Call Number",
+  "versionTag": "1.0",
+  "historyTimeToLive": 0,
+  "deploymentId": null,
+  "active": false,
+  "setup": {
+    "asyncBefore": false,
+    "asyncAfter": false
+  },
+  "nodes": [
+    "{{{mod-workflow}}}/startEvent/bf39c55f-1fd6-41a5-a98a-c28d6d05da9d",
+    "{{{mod-workflow}}}/databaseConnectionTask/11f065f0-f1ea-47ed-abc9-146099572e7b",
+    "{{{mod-workflow}}}/databaseQueryTask/f548dd78-4cf5-4eb9-9b28-e4738470d44b",
+    "{{{mod-workflow}}}/databaseDisconnectTask/db806bf5-49b8-4f8a-bf96-fc0258d3c31e",
+    "{{{mod-workflow}}}/emailTask/da165c76-b891-4d01-9fbb-f8da1b1a6d12",
+    "{{{mod-workflow}}}/endEvent/3c9848b3-f5a4-4753-b916-2b73c88d9409"
+  ],
+  "initialContext": {}
+}