Attachment Handling through WSO2 EI 6.1.1 in API

Question

Use Case:

• A REST API will be defined to handle the files sent by clients called (Postman REST Client) as attachment.
• The files sent as

Answer 1

Mock zoho api (use any simple python, pip install web server) and dump request came from ESB and see what is missing in request. Some of the header most probably missing, Content-Disposition Content-Type

API states "name" parameter is mandatory.

Answer 2

Looking at your code you are not doing anything with the incoming payload. so why are you trying to mediate the payload? just pass through it.