Hi @phutthamat.m 

Thanks for writing into the Community! Denis here, happy to help!

So you accidentally sent an event twice and want to remove it? Unfortunately, historical data in Amplitude is immutable and not changeable or editable. However, an option is to use the Export API, export all your project data and clean it (remove unwanted events) and then backfill into a new project.

• Export all event data using Export API and clean the values on events
• Set up a new project
• Self backfill all this new cleaned data into a new project see this guide for details and for a link to Export API https://developers.amplitude.com/docs/self-data-backfill-guide
• Delete old project

This would be the best way at the moment to handle this. The other solution is to use our User Privacy API to remove all data about one user, but this would remove all their “healthy” data too. So it is up to you to decide which you would choose. I hope this helps!

Hello,

Does this removes the event quota limit affected by the first project ingestion?
Meaning, if the first ingestion took 10% of your quota, do you get that 10% back after deleting?