Merge pull request awsdocs#225 from otoolema/patch-1

VPC Peering SG

Author: ckesser

doc_source/aws-properties-ec2-security-group-ingress.md

@@ -126,7 +126,7 @@ Specifies the name of the Amazon EC2 security group \(non\-VPC security group\)
 `SourceSecurityGroupOwnerId`  <a name="cfn-ec2-security-group-ingress-sourcesecuritygroupownerid"></a>
 Specifies the AWS Account ID of the owner of the Amazon EC2 security group specified in the `SourceSecurityGroupName` property\.  
 *Type*: String  
-*Required*: Conditional\. If you specify `SourceSecurityGroupName` and that security group is owned by a different account than the account creating the stack, you must specify the `SourceSecurityGroupOwnerId`; otherwise, this property is optional\.  
+*Required*: Conditional\. If you specify `SourceSecurityGroupName` or `SourceSecurityGroupId` and that security group is owned by a different account than the account creating the stack, you must specify the `SourceSecurityGroupOwnerId`; otherwise, this property is optional\.  
 *Update requires*: [Replacement](using-cfn-updating-stacks-update-behaviors.md#update-replacement)
 
 `ToPort`  <a name="cfn-ec2-security-group-ingress-toport"></a>
@@ -416,4 +416,4 @@ SGPing:
       FromPort: 8
       ToPort: -1
       CidrIp: 10.0.0.0/24
-```
+```