Group Aggregation - No configuration found

Hello Team,

We have a web service source which required 3 entitlement attributes. I have configured entitlement types (schema). The operation type is not listing 3 Group Aggregations-{entitlement type name} which required to configure for group aggregation.

As per document, the each group type should be listed.

https://documentation.sailpoint.com/connectors/webservices/help/integrating_webservices/multiple_group_objects.html

Please let me know if any additional configuration required.

Thanks,
Suresh