Hi Srikanth,

Welcome to Box Community!

Can you try the workflow below and confirm if it works for you?

• In postman, create zip download https://developer.box.com/reference/post-zip-downloads/
  


• For convenience, paste the download link returned from the call above in my web browser to begin zip download


• Make this request to get the status https://developer.box.com/reference/get-zip-downloads-id-status/
  

In case the workflow did not fix the issue, I highly recommend that you post your concern to our Developer community.

Thank you for posting!