How is Contact Activity log data generated?

Question

Hi all,
Am part of a development team responsible for extracting data from Eloqua data warehouse. recently created an export for Activity Type: EmailOpen and discovered
that the exported created by Eloqua had duplicated records which included the same ActivityID, ActivityDate and EmailRecipientId, it unlikely with EmailOpen Activity to have same time stamp.
Also had similar issues with other activity types. Is there any explanation for this outcome?
Used POSTMAN-REST Client tool to work with Eloqua REST API.

Answer 1

Export defined like this:-
  "name": "EmailOpen",
  "fields": {
  "ActivityId":"{{Activity.Id}}",
  "ActivityType":"{{Activity.Type}}",
  "ActivityDate":"{{Activity.CreatedAt}}",
  "EmailAddress":"{{Activity.Field(EmailAddress)}}",
  "ContactId":"{{Activity.Contact.Id}}",
  "IpAddress":"{{Activity.Field(IpAddress)}}",
  "VisitorId":"{{Activity.Visitor.Id}}",
  "EmailRecipientId":"{{Activity.Field(EmailRecipientId)}}",
  "AssetType":"{{Activity.Asset.Type}}",
  "AssetName":"{{Activity.Asset.Name}}",
  "AssetId":"{{Activity.Asset.Id}}",
  "SubjectLine":"{{Activity.Field(SubjectLine)}}",
  "EmailWebLink":"{{Activity.Field(EmailWebLink)}}",
  "VisitorExternalId":"{{Activity.Visitor.ExternalId}}",
  "CampaignId":"{{Activity.Campaign.Id}}"
  "filter": "'{{Activity.Type}}'='EmailOpen'"
Export definition and sync clearly works fines,  but the response data seems mutated with the same ActivityID,ActivityDate, EmailRecipientId appearing in multiple records.
It happens(duplicated data) with other Activity Types, EmailOpen is the suitable scenario to share since a contact can open an email at a unique timestamp which goes for the ActivityDate. It will be helpful to know why records were duplicated.