Hi there,
For now, you can’t directly generate a single “Top Members” report file via the API that includes data for all languages in one request.
The API endpoint requires you to specify a languageId, meaning you generate the report for one language at a time.
After downloading the report file for each language, you will need to combine the data from these individual reports on your end to get a comprehensive Top Members report across all languages.
I’ll check with the team if there’s a possibility to add languageId = all scope; once I have some news, I’ll let you know.