How i can get all attachments in request?

I found this in  https://intranet.wiki.zoho.com/MSP-SDP/XML-based-Rest-API.html

But it not work :(

I play around  http://localhost:8080/sdpapi/request/<ID>/attachments/?OPERATION_NAME=GET&TECHNICIAN_KEY=XXXXX-XXX-XXXXX-XXXX

but operation name "GET/GET_ATTACHMENTS/GET_ALL/etc" is incorrect. Without OPERATION_NAME and TECHNICIAN_KEY this does not work too.

I need save all attachments from request - how i can do it? :(