Is there any way to use a reference attribute in a match rule?

Question

Is there anyway to use a reference attribute in a match rule? I am getting the following error message.

"severity": "Error",
"errorMessage": "Only simple type attributes are allowed in match rules",
"errorCode": 375,
"errorDetailMessage": "Match rule 'configuration/entityTypes/Individual/matchGroups/Rule1' attribute 'configuration/entityTypes/Individual/attributes/Country' should not have type other than simple.",
"innerErrorData": {
"exception": "com.reltio.metadata.model.exceptions.AttributeTypeIsNotSimpleException:Code: ATTRIBUTE_TYPE_IS_NOT_SIMPLE; Message parameters: null. Only simple type attributes are allowed in match rules. Match rule 'configuration/entityTypes/Individual/matchGroups/Rule1' attribute 'configuration/entityTypes/Individual/attributes/Country' should not have type other than simple. at com.reltio.metadata.model.match.ValidatingMatchRuleModelVisitor.checkAttribute, line 410"
}

Match rule

"matchGroups": [
{
"uri": "configuration/entityTypes/Individual/matchGroups/Rule1",
"label": "Suspect-Exact On FullName,Source",
"type": "suspect",
"scope": "INTERNAL",
"useOvOnly": "true",
"rule": {
"matchTokenClasses": {
"mapping": [
{
"attribute": "configuration/entityTypes/Individual/attributes/Name",
"class": "com.reltio.match.token.ExactMatchToken"
},
{
"attribute": "configuration/entityTypes/Individual/attributes/Country",
"class": "com.reltio.match.token.ExactMatchToken"
}
]
},
"comparatorClasses": {
"mapping": [
{
"attribute": "configuration/entityTypes/Individual/attributes/Name",
"class": "com.reltio.match.comparator.BasicStringComparator"
},
{
"attribute": "configuration/entityTypes/Individual/attributes/Source",
"class": "com.reltio.match.comparator.BasicStringComparator"
},
{
"attribute": "configuration/entityTypes/Individual/attributes/Country",<<<===
"class": "com.reltio.match.comparator.BasicStringComparator"
}
]
},
"and": {
"exact": [
"configuration/entityTypes/Individual/attributes/Name",
"configuration/entityTypes/Individual/attributes/Source",
"configuration/entityTypes/Individual/attributes/Country" <<<===
]
}
},
"scoreStandalone": 0,
"scoreIncremental": 0
}

Answer

Look at the configuration being used

Example:

This is the current configuration:{
          "label": "Country",
          "name": "Country",
          "type": "Reference",
          "hidden": false,
          "important": false,
          "system": false,
          "relationshipLabelPattern": "{Name} {OrganizationType}",
          "attributeOrdering": {
            "fieldURI": "configuration/entityTypes/Organization/attributes/Name",
            "orderType": "ASC",
            "orderingStrategy": "LUD"
          },
          "uri": "configuration/entityTypes/Individual/attributes/Country",
          "referencedAttributeURIs": [
            "configuration/entityTypes/Organization/attributes/Name"  <<====
          ],
          "referencedEntityTypeURI": "configuration/entityTypes/Organization",
          "relationshipTypeURI": "configuration/relationTypes/OrganizationIndividual",
          "skipInDataAccess": false
        },

The correct usage of the attribute would be like 'exact(configuration/entityTypes/Individual/attributes/Country/attributes/Name)'.

The Country itself cannot be used, it is composite attribute. Its nested leaf attributes listed in 'referencedAttributeURIs' can be used as if they belong to 'Individual' configuration/entityTypes/Organization is replaced by configuration/entityTypes/Individual/attributes/Country in the original attribute