Updating events using the Web API

Hi guys,

we are using the Web API to update the values of 1 or 2 dataelements that belong to a Single Event Without Registration program of more than 700 data elements

The payload is something like that


However, it seems that the updating also removes the values of the rest of the dataelements. So, do we need to send a payload with all dataelements with their current values? Is there other way to do this? (we can have events of more than 1200 data points)