Module provided in the request is not supported

Module provided in the request is not supported

Hello!

I use REST API in service desk plus and have 2 questions:

Question 1

I send command: http://hd-test.ds.local:8080/sdpapi/technician?OPERATION_NAME=GET_ALL&TECHNICIAN_KEY=XXXX

Response:
  1. <operation name="GET_ALL">
  2. <result>
  3. <status>Failed</status>
  4. <message>Module provided in the request is not supported.</message>
  5. </result>
  6. </operation>
Where is mistake?


Question 2
Can I get department list through service desk API?

Thanks in advance!