On event model, seats_limited and date_tz are required but are editable stored fields. An override of create has been added to ensure they have a value as compute are called after creation which leads to required not being satisfied. Now that precompute [1] is available this code can be safely replaced. Performance tests (not yet merged [2]) indicate this has no impact on queries. What was done manually before this commit is now done directly by the ORM. [1] odoo/odoo@d04a5b5c8c [2] odoo/odoo#81068 Task-2702872 (Event precompute) closes odoo/odoo#80672 Signed-off-by: Warnon Aurélien (awa) <awa@odoo.com>