WordPress REST API always misses parameters - rest_missing_callback_param

Question

I tried to test out WordPress REST API by deleting a user (using basic authentication just to see if everything works), but no matter how I try to pass the parameters to the destination server, I always get rest_missing_callback_param.

Here is a screenshot from POSTMAN:

It happens even when I tried with PHP:

$ch = curl_init();
curl_setopt( $ch, CURLOPT_URL,"http://web.com/wp-json/wp/v2/users/3" );
curl_setopt( $ch, CURLOPT_CUSTOMREQUEST, "DELETE" );
curl_setopt( $ch, CURLOPT_HTTPHEADER, 

    array( 'Authorization: Bearer ' .$authToken )

);

curl_setopt( $ch, CURLOPT_POSTFIELDS, $http_query );
curl_setopt( $ch, CURLOPT_RETURNTRANSFER, true );
$output = curl_exec( $ch );
curl_close( $ch );

What could possibly be a problem here?

Thank you.

Answer 1

You need to deliver another argument - the reassign.

"Reassign the deleted user's posts and links to this user ID." - WP API documentation

Please try like this:

DELETE http://web.com/wp-json/wp/v2/users/3?reassign=NEW_USER_ID