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1. In Studio add a custom service named AQ_Aggregate_Index_Migrate
2. The service definition looks like this:
   
   
   
3. The aggregateId is always required.
   The aggregate version is optional. In case this is not specified, the latest version of an aggregate will be indexed.
    

   We need a service that is able to update an aggregate. This service has following has the following parameters:

    

   Parameter	Direction	Value	Data Type	Description	Fill
   AggregateType	Input	Module Element	Aggregate	Select the aggregate that you want to update.	Required
   AggregateID	Input	Expression	Integer	Please provide the attribute containing the ID of the aggregate entry to index.	Required
   AggregateVersion	Input	Expression	Integer	If a specific version of the aggregate needs to be updated. If not provided then the latest one is updated.	Optional
   StoreInstances	Input	Expression	Entity	Specify the starting point instance(s) used for storage.	Optional

    

   Event Name	Event Type	Description
   AppException	Cancel	The service takes this exit if indexing failed for some reason.

   
   

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