Now you can edit metadata for individual responses in the Response List tab in Survey analytics!
Open Survey analytics from your navigation bar and from the top right corner choose Response List. Filter your view and then scroll the Response List all the way to the right so you'll see the pencil and trash can icons (example below).
Click the pencil icon and open a pop-up window where you can edit the metadata for your selected response. Add your key-value pair and select Add new. Remember to press Save and you'll see the added metadata as a new column in the Response List. You can use previously created key-value pairs or add completely new ones in this view.
You can also remove previously added metadata by clicking the trash can icon on the right side of the key-value pair.
Please note that in this view you can only edit metadata for individual responses. Find also our Help Center articles for adding metadata to your surveys and touchpoints.