Those responses codes could be in any API because they are the common responses.

Response Codes	Description
-1	Login fails.
-2	API used too frequently.
-3	Invalid agent.(only works for agent users)
-4	Not in this agent.(only works for agent users)
-7	No permission to use this API.
-8	Account got prohibited.
85	Account logged-on in another place and your request got rejected.
-99	This API is not ready to be used.No rush.
1	Action completed successfully.
2	POST method only.
3	Unknown errors.
6	Invalid user_id.(only works for agent users)
7	User is not under this agent.(only works for agent users)

Common Response Codes