diff --git a/AWS-IAM-CLI.md b/AWS-IAM-CLI.md
index 0c1cd77..586dc8d 100644
--- a/AWS-IAM-CLI.md
+++ b/AWS-IAM-CLI.md
@@ -297,7 +297,7 @@ aws --endpoint $AWS_ENDPOINT iam list-policies
 
 ```bash
 aws --endpoint $AWS_ENDPOINT iam get-policy \
-  --policy-arn arn:aws:iam::seaweedfs:policy/ReadOnlyPolicy
+  --policy-arn arn:aws:iam:::policy/ReadOnlyPolicy
 ```
 
 #### Attach a Managed Policy to a User
@@ -305,7 +305,7 @@ aws --endpoint $AWS_ENDPOINT iam get-policy \
 ```bash
 aws --endpoint $AWS_ENDPOINT iam attach-user-policy \
   --user-name bob \
-  --policy-arn arn:aws:iam::seaweedfs:policy/ReadOnlyPolicy
+  --policy-arn arn:aws:iam:::policy/ReadOnlyPolicy
 ```
 
 #### List Managed Policies Attached to a User
@@ -319,7 +319,7 @@ aws --endpoint $AWS_ENDPOINT iam list-attached-user-policies --user-name bob
 ```bash
 aws --endpoint $AWS_ENDPOINT iam detach-user-policy \
   --user-name bob \
-  --policy-arn arn:aws:iam::seaweedfs:policy/ReadOnlyPolicy
+  --policy-arn arn:aws:iam:::policy/ReadOnlyPolicy
 ```
 
 #### Delete a Managed Policy
@@ -328,7 +328,7 @@ aws --endpoint $AWS_ENDPOINT iam detach-user-policy \
 
 ```bash
 aws --endpoint $AWS_ENDPOINT iam delete-policy \
-  --policy-arn arn:aws:iam::seaweedfs:policy/ReadOnlyPolicy
+  --policy-arn arn:aws:iam:::policy/ReadOnlyPolicy
 ```
 
 ---
@@ -411,7 +411,7 @@ aws --endpoint $AWS_ENDPOINT iam put-user-policy \
 # 6. Attach a managed policy (e.g., ReadOnlyPolicy is built-in or previously created)
 aws --endpoint $AWS_ENDPOINT iam attach-user-policy \
   --user-name alice \
-  --policy-arn arn:aws:iam::seaweedfs:policy/ReadOnlyPolicy
+  --policy-arn arn:aws:iam:::policy/ReadOnlyPolicy
 
 # 7. Verify
 echo 's3.configure' | weed shell
diff --git a/Amazon-IAM-API.md b/Amazon-IAM-API.md
index 8257653..780b37f 100644
--- a/Amazon-IAM-API.md
+++ b/Amazon-IAM-API.md
@@ -157,7 +157,7 @@ Managed policies are standalone policies that can be attached to multiple users.
 # Attach a managed policy to user
 aws --endpoint $AWS_ENDPOINT iam attach-user-policy \
   --user-name alice \
-  --policy-arn arn:aws:iam::seaweedfs:policy/ReadOnlyPolicy
+  --policy-arn arn:aws:iam:::policy/ReadOnlyPolicy
 
 # List attached managed policies for a user
 aws --endpoint $AWS_ENDPOINT iam list-attached-user-policies --user-name alice
@@ -165,7 +165,7 @@ aws --endpoint $AWS_ENDPOINT iam list-attached-user-policies --user-name alice
 # Detach a managed policy
 aws --endpoint $AWS_ENDPOINT iam detach-user-policy \
   --user-name alice \
-  --policy-arn arn:aws:iam::seaweedfs:policy/ReadOnlyPolicy
+  --policy-arn arn:aws:iam:::policy/ReadOnlyPolicy
 
 # Create a managed policy
 aws --endpoint $AWS_ENDPOINT iam create-policy \
@@ -177,11 +177,11 @@ aws --endpoint $AWS_ENDPOINT iam list-policies
 
 # Get managed policy metadata
 aws --endpoint $AWS_ENDPOINT iam get-policy \
-  --policy-arn arn:aws:iam::seaweedfs:policy/MyManagedPolicy
+  --policy-arn arn:aws:iam:::policy/MyManagedPolicy
 
-# Delete a managed policy
+# Delete a managed policy (must be detached from all users first)
 aws --endpoint $AWS_ENDPOINT iam delete-policy \
-  --policy-arn arn:aws:iam::seaweedfs:policy/MyManagedPolicy
+  --policy-arn arn:aws:iam:::policy/MyManagedPolicy
 ```
 
 ### Self-Service: User Managing Their Own Keys