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Need Help: API POST Call Requires Multipart + CSV file

  • December 1, 2025
  • 0 replies
  • 13 views

Hello,
I need to make an API POST call where the endpoint expects multipart/form-data. The API accepts normal JSON fields as part of the multipart request, and it also requires a .csv file upload as a mandatory input.

Right now, I am using a JSON call step, but that only lets me send application/json. Since the API requires multipart with both JSON and file, I’m not sure how to proceed.

My Questions:
1. How do I send JSON + a CSV file in a single multipart request?
2. Do I need to switch from the JSON call step to a multipart/form-data step?
3. If using Ataccama, which step/component should be used to construct multipart requests?