From c08bfa48cb9f5f0ddd62c48a540a6755888d007e Mon Sep 17 00:00:00 2001
From: AWS <>
Date: Tue, 16 Mar 2021 18:10:45 +0000
Subject: [PATCH] AWS Lambda Update: Allow empty list for function response
 types

---
 .changes/next-release/feature-AWSLambda-ad9e3dc.json       | 6 ++++++
 .../src/main/resources/codegen-resources/service-2.json    | 7 ++-----
 2 files changed, 8 insertions(+), 5 deletions(-)
 create mode 100644 .changes/next-release/feature-AWSLambda-ad9e3dc.json

diff --git a/.changes/next-release/feature-AWSLambda-ad9e3dc.json b/.changes/next-release/feature-AWSLambda-ad9e3dc.json
new file mode 100644
index 000000000000..e5ab2d495c79
--- /dev/null
+++ b/.changes/next-release/feature-AWSLambda-ad9e3dc.json
@@ -0,0 +1,6 @@
+{
+    "type": "feature",
+    "category": "AWS Lambda",
+    "contributor": "",
+    "description": "Allow empty list for function response types"
+}
diff --git a/services/lambda/src/main/resources/codegen-resources/service-2.json b/services/lambda/src/main/resources/codegen-resources/service-2.json
index bb9557206b96..9333eb288402 100644
--- a/services/lambda/src/main/resources/codegen-resources/service-2.json
+++ b/services/lambda/src/main/resources/codegen-resources/service-2.json
@@ -2358,7 +2358,7 @@
       "type":"list",
       "member":{"shape":"FunctionResponseType"},
       "max":1,
-      "min":1
+      "min":0
     },
     "FunctionVersion":{
       "type":"string",
@@ -3105,7 +3105,6 @@
     },
     "LayerPermissionAllowedAction":{
       "type":"string",
-      "max":22,
       "pattern":"lambda:GetLayerVersion"
     },
     "LayerPermissionAllowedPrincipal":{
@@ -3746,7 +3745,6 @@
     },
     "OrganizationId":{
       "type":"string",
-      "max":34,
       "pattern":"o-[a-z0-9]{10,32}"
     },
     "PackageType":{
@@ -3793,7 +3791,7 @@
     },
     "Principal":{
       "type":"string",
-      "pattern":"[^\\s]+"
+      "pattern":".*"
     },
     "ProvisionedConcurrencyConfigList":{
       "type":"list",
@@ -4355,7 +4353,6 @@
     },
     "SourceOwner":{
       "type":"string",
-      "max":12,
       "pattern":"\\d{12}"
     },
     "State":{