Need iterations from Project settings in Azure DevOps

Hi ,

I am using following API call,
GET https://dev.azure.com/{organization}/{project}/{team}/_apis/work/teamsettings/iterations/{id}?api-version=4.1

This is returning me the iterations at team settings.

I need Iterations from Project settings. I used get this data before TLS 1.2 migration. After i have included TLS 1.2, the API call only returns iterations from team settings, please help.

Thanks,