You have configured the NSX-T and your Workspace One (Formerly VIDM) appliance per the documentation linked below:
https://docs.vmware.com/en/VMware-Validated-Design/6.0/sddc-deployment-of-cloud-operations-and-automation-in-the-first-region/GUID-4F023807-B938-45B4-83B8-D48F48307AA5.html
However, while attempting to access the NSX-T through workspace one for authentication, you receive an error of "502 Bad Gateway".
VMware NSX-T Data Center