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In the API Manager, open a proxy for editing, then go to the Proxy Endpoints tab.
Check the box for the endpoint to delete.
Click the trash icon ( ) to delete the endpoint. The Delete confirmation message appears:
Click Delete.
Verify the deleted Assets by navigating to the Manager Recycle Bin for your Org.
To delete forever:
Select the endpoint.
Click to delete it permanently from the Manager Recycle Bin.
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