# IpamPolicyAllocationRuleRequest
<a name="API_IpamPolicyAllocationRuleRequest"></a>

Information about a requested IPAM policy allocation rule.

Allocation rules are optional configurations within an IPAM policy that map Amazon resource types to specific IPAM pools. If no rules are defined, the resource types default to using Amazon-provided IP addresses.

## Contents
<a name="API_IpamPolicyAllocationRuleRequest_Contents"></a>

 ** SourceIpamPoolId **   
The ID of the source IPAM pool for the requested allocation rule.  
An IPAM pool is a collection of IP addresses in IPAM that can be allocated to Amazon resources.  
Type: String  
Required: No

## See Also
<a name="API_IpamPolicyAllocationRuleRequest_SeeAlso"></a>

For more information about using this API in one of the language-specific Amazon SDKs, see the following:
+  [Amazon SDK for C\$1\$1](https://docs.amazonaws.cn/goto/SdkForCpp/ec2-2016-11-15/IpamPolicyAllocationRuleRequest) 
+  [Amazon SDK for Java V2](https://docs.amazonaws.cn/goto/SdkForJavaV2/ec2-2016-11-15/IpamPolicyAllocationRuleRequest) 
+  [Amazon SDK for Ruby V3](https://docs.amazonaws.cn/goto/SdkForRubyV3/ec2-2016-11-15/IpamPolicyAllocationRuleRequest)