Dear Jothivel,
Based on my test, I can reproduce the issue in our environment and it seems that the LikedMessage.csv isn't included in the .zip file via Network Data Export API way.
Sorry for that we may have limited resources on whether it is a limitation in Yammer.
If it is convenient and you are not the administrator, I suggest you contact the administrator in your company and let him follow the steps in Get support - Microsoft 365 admin | Microsoft Learn to open a support ticket to our related team as soon as possible so that they can see if they can involve more resources and give you an answer about whether it is a limitation in Yammer at their side.
About admin roles in the Microsoft 365 admin center - Microsoft 365 admin | Microsoft Learn
How do I find my Microsoft 365 admin? - Microsoft Support
The administrator should be able to open the support ticket from Help & support in the Microsoft 365 admin center.
Then you can select the Phone support or the Email support as follows.
To simplify the process, I'd like to summarize the issue as follows.
Issue Symptom:
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When using the API call such as https://www.yammer.com/api/v1/export?since=2020-02-09T00:00:00+00:00 via the steps in Network Data Export - Yammer | Microsoft Learn, LikedMessage.csv isn't included in the exported .zip folder.
Issue Environment:
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Yammer
What users have done:
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Do a test at their side and confirm the issue.
Next Step:
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Open a support ticket to our related team for further confirmation.
As a workaround, you may create a sample flow to filter the message with the liked count. If you want to summarize in multiple communites, you may create an Excel sheet listing the communities so that the flow can capture them automatically.
/messages.json - Yammer | Microsoft Learn
Site Address: https://www.yammer.com
Method: GET
Uri: api/v1/messages.json
Compose: outputs('Send_an_HTTP_request_to_SharePoint')?['body']?['messages']
Filter Array: item()?['group_id'] is equal to the specific group id.
Filter Array2: item()?['liked_by']?['count'] is not equal to 0.
Thanks for your understanding and effort.
Sincerely
Cliff | Microsoft Community Moderator



