# `AWS-AddOpsItemDedupStringToEventBridgeRule`


 **Description** 

 The `AWS-AddOpsItemDedupStringToEventBridgeRule` runbook adds a deduplication string for all Amazon Systems Manager OpsItems associated with an Amazon EventBridge rule. The runbook doesn't add a deduplication string to the rule if one has already been applied. To learn more deduplication strings and OpsItems, see [Reducing duplicate OpsItems](https://docs.amazonaws.cn/systems-manager/latest/userguide/OpsCenter-creating-OpsItems.html#OpsCenter-working-deduplication) in the *Amazon Systems Manager User Guide* . 

 [Run this Automation (console)](https://console.amazonaws.cn/systems-manager/automation/execute/AWS-AddOpsItemDedupStringToEventBridgeRule) 

**Document type**

Automation

**Owner**

Amazon

**Platforms**

Linux, macOS, Windows

**Parameters**
+ AutomationAssumeRole

  Type: String

  Description: (Optional) The Amazon Resource Name (ARN) of the Amazon Identity and Access Management (IAM) role that allows Systems Manager Automation to perform the actions on your behalf. If no role is specified, Systems Manager Automation uses the permissions of the user that starts this runbook.
+ DedupString

  Type: String

  Description: (Required) The deduplication string you want to add to the rule.
+ RuleName

  Type: String

  Description: (Required) The name of the rule you want to add the deduplication string to.

**Required IAM permissions**

The `AutomationAssumeRole` parameter requires the following actions to use the runbook successfully.
+  `ssm:StartAutomationExecution` 
+  `ssm:GetAutomationExecution` 
+  `events:ListTargetsByRule` 
+  `events:PutTargets` 

 **Document Steps** 
+  `aws:executeScript` - Adds a deduplication string to the EventBridge rule you specify in the `RuleName` parameter.