Hi, I've got an error when i execute a put method in JAVA with an HttpClient :

For the module contacts, i want to know informations about only one contact, so i use the action "all" and i send my request with "/contacts?action=all&session=my_session_id&columns= list_of_id_of_requested_columns_informations"
and in the RequestEntity (cause the RequestBody is deprecated) i send a JSONObject with the "id" of the requested contact and the "folder" containing the contact.

And this is the response i receive :

"{"category":8,"error_params":["folder"],"error":"Missing the following field: %s","error_id":"-177590921-673","code":"SVL-0002"}"

I really don't understand what is the problem

Thanks for every help