https://docs.microsoft.com/en-us/linkedin/consumer/integrations/self-serve/migration-faq?context=linkedin/consumer/context?trk=eml_mktg_gco_dev_api_comms It seems linkedin backend is using v1 ([link](https://github.com/python-social-auth/social-core/blob/master/social_core/backends/linkedin.py#L15))
https://docs.microsoft.com/en-us/linkedin/consumer/integrations/self-serve/migration-faq?context=linkedin/consumer/context?trk=eml_mktg_gco_dev_api_comms
It seems linkedin backend is using v1 (link)