diff --git a/openapi/spec3.beta.sdk.json b/openapi/spec3.beta.sdk.json
index 4dff8297..04966e9a 100644
--- a/openapi/spec3.beta.sdk.json
+++ b/openapi/spec3.beta.sdk.json
@@ -41817,7 +41817,17 @@
       },
       "payment_method_details_affirm": {
         "description": "",
-        "properties": {},
+        "properties": {
+          "transaction_id": {
+            "description": "The Affirm transaction ID associated with this payment.",
+            "maxLength": 5000,
+            "nullable": true,
+            "type": "string"
+          }
+        },
+        "required": [
+          "transaction_id"
+        ],
         "title": "payment_method_details_affirm",
         "type": "object",
         "x-expandableFields": []
diff --git a/openapi/spec3.beta.sdk.yaml b/openapi/spec3.beta.sdk.yaml
index 3c696c11..5c3b0fd4 100644
--- a/openapi/spec3.beta.sdk.yaml
+++ b/openapi/spec3.beta.sdk.yaml
@@ -37986,7 +37986,14 @@ components:
       x-expandableFields: []
     payment_method_details_affirm:
       description: ''
-      properties: {}
+      properties:
+        transaction_id:
+          description: The Affirm transaction ID associated with this payment.
+          maxLength: 5000
+          nullable: true
+          type: string
+      required:
+        - transaction_id
       title: payment_method_details_affirm
       type: object
       x-expandableFields: []
diff --git a/openapi/spec3.json b/openapi/spec3.json
index 421f6262..a156ccb0 100644
--- a/openapi/spec3.json
+++ b/openapi/spec3.json
@@ -29662,7 +29662,14 @@
       },
       "payment_method_details_affirm": {
         "description": "",
-        "properties": {},
+        "properties": {
+          "transaction_id": {
+            "description": "The Affirm transaction ID associated with this payment.",
+            "maxLength": 5000,
+            "nullable": true,
+            "type": "string"
+          }
+        },
         "title": "payment_method_details_affirm",
         "type": "object",
         "x-expandableFields": []
diff --git a/openapi/spec3.sdk.json b/openapi/spec3.sdk.json
index 6d4601cb..5709ad58 100644
--- a/openapi/spec3.sdk.json
+++ b/openapi/spec3.sdk.json
@@ -36239,7 +36239,17 @@
       },
       "payment_method_details_affirm": {
         "description": "",
-        "properties": {},
+        "properties": {
+          "transaction_id": {
+            "description": "The Affirm transaction ID associated with this payment.",
+            "maxLength": 5000,
+            "nullable": true,
+            "type": "string"
+          }
+        },
+        "required": [
+          "transaction_id"
+        ],
         "title": "payment_method_details_affirm",
         "type": "object",
         "x-expandableFields": []
diff --git a/openapi/spec3.sdk.yaml b/openapi/spec3.sdk.yaml
index 01ed27b2..6ab4b6dd 100644
--- a/openapi/spec3.sdk.yaml
+++ b/openapi/spec3.sdk.yaml
@@ -33030,7 +33030,14 @@ components:
       x-expandableFields: []
     payment_method_details_affirm:
       description: ''
-      properties: {}
+      properties:
+        transaction_id:
+          description: The Affirm transaction ID associated with this payment.
+          maxLength: 5000
+          nullable: true
+          type: string
+      required:
+        - transaction_id
       title: payment_method_details_affirm
       type: object
       x-expandableFields: []
diff --git a/openapi/spec3.yaml b/openapi/spec3.yaml
index 5ece9b5f..b185dabe 100644
--- a/openapi/spec3.yaml
+++ b/openapi/spec3.yaml
@@ -27828,7 +27828,12 @@ components:
       x-expandableFields: []
     payment_method_details_affirm:
       description: ''
-      properties: {}
+      properties:
+        transaction_id:
+          description: The Affirm transaction ID associated with this payment.
+          maxLength: 5000
+          nullable: true
+          type: string
       title: payment_method_details_affirm
       type: object
       x-expandableFields: []