How to generate refresh token for production

We are working on creating a connection between Adobe and square developer account for production toggle.
However We have details of Application ID, Secret and Access Token for production toggle and we would also required Refresh token as well.
Please let me know How we can generate refresh Token for Production toggle

:wave: With Square a refresh_token is returned in the ObtainToken API call after the call to Authorize when your application goes through OAuth. :slightly_smiling_face: