diff --git a/static/oas/Codat-Lending.json b/static/oas/Codat-Lending.json
index 9c344893a..e8e48b431 100644
--- a/static/oas/Codat-Lending.json
+++ b/static/oas/Codat-Lending.json
@@ -110422,7 +110422,14 @@
                   "$ref": "#/components/schemas/FinancialSummary"
                 },
                 "example": {
-                  "booksClosedDate": "2025-05-31T00:00:00Z",
+                  "booksClosedDate": {
+                    "date": "2025-05-31T00:00:00Z",
+                    "reason": [
+                      "One or more accounts show a deviation from expected movements for March 2025",
+                      "One of the marketing accounts haven't been booked for February 2025",
+                      "One of the inventory accounts haven't been booked for March 2025"
+                    ]
+                  },
                   "accountingScore": {
                     "score": 90,
                     "reason": [
@@ -120800,9 +120807,28 @@
         "type": "object",
         "properties": {
           "booksClosedDate": {
-            "type": "string",
+            "type": "object",
             "description": "The date time in UTC the books closed.",
-            "example": "2025-05-31T00:00:00Z"
+            "properties": {
+              "date": {
+                "type": "string",
+                "format": "date-time",
+                "description": "The date time in UTC the books closed.",
+                "example": "2025-05-31T00:00:00Z"
+              },
+              "reason": {
+                "type": "array",
+                "description": "List of reasons explaining the books closed date.",
+                "items": {
+                  "type": "string"
+                },
+                "example": [
+                  "One or more accounts show a deviation from expected movements for March 2025",
+                  "One of the marketing accounts haven't been booked for February 2025",
+                  "One of the inventory accounts haven't been booked for March 2025"
+                ]
+              }
+            }
           },
           "accountingScore": {
             "type": "object",