# Introduction
Following https://github.com/twentyhq/twenty/pull/13420
What has been done:
- `CreateFieldInput` transpilation to `FlatFieldMetadata`
- `FlatFieldMetadata` validator service
- A lof of transpilation utils from `input` to `flatObject` or
`flatField`
- Created dedicated v2 api metadata services
- Introducing `inferDeletionFromMissingObjectFieldIndex` in the builder,
to avoid diffing every object and field of the current workspace we
allow only generating create/update migration operations, usefull when
passing by the api metadata
## We still need to in another PR:
- Implement a strong unit test coverage and critical functions and
services
- Finalize flat field metadata validation exception for `options`
`defaultValue` `settings` and `relations`
- Finalize `flatObjectMetadata` validation and v2 service refactor
- Plug the new service when feature flag is enabled
This PR is supposed to solve an issue with the syncrhonisation of
messages, specifically with microsoft driver. Microsoft calls don't need
access_Token so refreshing toekns was not implemented.
However, microsoft rely on its client which calls its refresfh_token,
and I might have missed some underlying dependency from microsoft
impelemtation so I setup the access token process to refresh it
Needs a talk before to be merged
Fix : https://github.com/twentyhq/twenty/issues/10367
EDIT:
it was a problem with microsoft making refreshtoken expire (contrarily
to google) which needs to be handled.
