How to upgrade from v3.x to v4.x dropping bitbucket auth



I am running Concourse v3.x and my teams use bitbucket auth.

I am fine dropping the bitbucket auth in order to upgrade to Concourse v4 but it looks like the migration path is not clear.

If I try the upgrade the database migration fails here:

I guess I need to change configuration of the teams before the upgrade ?
Are there documented preparatory steps on how to migrate to OIDC ?

thank you



Yes, you need to remove Bitbucket auth while on 3.x.
See Upgrade to 4 with UAA authenticated teams for more details.
Note also that the next release, 5.x, will have Bitbucket auth back.