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# AWS::EntityResolution::IdMappingWorkflow IdMappingRuleBasedProperties
<a name="aws-properties-entityresolution-idmappingworkflow-idmappingrulebasedproperties"></a>

 An object that defines the list of matching rules to run in an ID mapping workflow.

## Syntax
<a name="aws-properties-entityresolution-idmappingworkflow-idmappingrulebasedproperties-syntax"></a>

To declare this entity in your CloudFormation template, use the following syntax:

### JSON
<a name="aws-properties-entityresolution-idmappingworkflow-idmappingrulebasedproperties-syntax.json"></a>

```
{
  "[AttributeMatchingModel](#cfn-entityresolution-idmappingworkflow-idmappingrulebasedproperties-attributematchingmodel)" : String,
  "[RecordMatchingModel](#cfn-entityresolution-idmappingworkflow-idmappingrulebasedproperties-recordmatchingmodel)" : String,
  "[RuleDefinitionType](#cfn-entityresolution-idmappingworkflow-idmappingrulebasedproperties-ruledefinitiontype)" : String,
  "[Rules](#cfn-entityresolution-idmappingworkflow-idmappingrulebasedproperties-rules)" : [ Rule, ... ]
}
```

### YAML
<a name="aws-properties-entityresolution-idmappingworkflow-idmappingrulebasedproperties-syntax.yaml"></a>

```
  [AttributeMatchingModel](#cfn-entityresolution-idmappingworkflow-idmappingrulebasedproperties-attributematchingmodel): String
  [RecordMatchingModel](#cfn-entityresolution-idmappingworkflow-idmappingrulebasedproperties-recordmatchingmodel): String
  [RuleDefinitionType](#cfn-entityresolution-idmappingworkflow-idmappingrulebasedproperties-ruledefinitiontype): String
  [Rules](#cfn-entityresolution-idmappingworkflow-idmappingrulebasedproperties-rules): 
    - Rule
```

## Properties
<a name="aws-properties-entityresolution-idmappingworkflow-idmappingrulebasedproperties-properties"></a>

`AttributeMatchingModel`  <a name="cfn-entityresolution-idmappingworkflow-idmappingrulebasedproperties-attributematchingmodel"></a>
The comparison type. You can either choose `ONE_TO_ONE` or `MANY_TO_MANY` as the `attributeMatchingModel`.   
If you choose `ONE_TO_ONE`, the system can only match attributes if the sub-types are an exact match. For example, for the `Email` attribute type, the system will only consider it a match if the value of the `Email` field of Profile A matches the value of the `Email` field of Profile B.  
If you choose `MANY_TO_MANY`, the system can match attributes across the sub-types of an attribute type. For example, if the value of the `Email` field of Profile A matches the value of the `BusinessEmail` field of Profile B, the two profiles are matched on the `Email` attribute type.   
*Required*: Yes  
*Type*: String  
*Allowed values*: `ONE_TO_ONE | MANY_TO_MANY`  
*Update requires*: [No interruption](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/using-cfn-updating-stacks-update-behaviors.html#update-no-interrupt)

`RecordMatchingModel`  <a name="cfn-entityresolution-idmappingworkflow-idmappingrulebasedproperties-recordmatchingmodel"></a>
 The type of matching record that is allowed to be used in an ID mapping workflow.   
If the value is set to `ONE_SOURCE_TO_ONE_TARGET`, only one record in the source can be matched to the same record in the target.  
If the value is set to `MANY_SOURCE_TO_ONE_TARGET`, multiple records in the source can be matched to one record in the target.  
*Required*: Yes  
*Type*: String  
*Allowed values*: `ONE_SOURCE_TO_ONE_TARGET | MANY_SOURCE_TO_ONE_TARGET`  
*Update requires*: [No interruption](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/using-cfn-updating-stacks-update-behaviors.html#update-no-interrupt)

`RuleDefinitionType`  <a name="cfn-entityresolution-idmappingworkflow-idmappingrulebasedproperties-ruledefinitiontype"></a>
 The set of rules you can use in an ID mapping workflow. The limitations specified for the source or target to define the match rules must be compatible.  
*Required*: No  
*Type*: String  
*Allowed values*: `SOURCE | TARGET`  
*Update requires*: [No interruption](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/using-cfn-updating-stacks-update-behaviors.html#update-no-interrupt)

`Rules`  <a name="cfn-entityresolution-idmappingworkflow-idmappingrulebasedproperties-rules"></a>
 The rules that can be used for ID mapping.  
*Required*: No  
*Type*: Array of [Rule](aws-properties-entityresolution-idmappingworkflow-rule.md)  
*Minimum*: `1`  
*Maximum*: `25`  
*Update requires*: [No interruption](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/using-cfn-updating-stacks-update-behaviors.html#update-no-interrupt)