How can I import data without losing information?

Question

how can I import data to always be new data, the system does not automatically update when there is a duplicate name or email or phone number. because if I update new data according to the old data, I will lose data information, this is very dangerous.
Does anyone have a way to solve it, please help me
Thanks

Cybrosys Techno Solutions Pvt.Ltd · Answer

Hi,
Odoo uses the External ID (also known as XML ID) to
identify and update existing records. If you leave this field blank or
avoid it entirely, Odoo will not link the data to any existing record,
and It will create a new record every time.
Even with no
External ID, Odoo may still raise an error if the model has Unique
constraints on fields like email, phone, and name (depending on the
model). You’ll need to remove those constraints (inheriting and
overriding the model) or ensure unique values.

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