In Odoo 17, an One2many field represents a one-to-many relationship between two models. It allows you to link multiple records from one model to a single record in another model. Each record in the second model can have multiple related records in the first model. You can empty an One2many field using either the unlink() method directly on the field or by using the command.unlink technique. The unlink() method directly removes the records associated with the One2many field. The command.unlink() method is commonly used when you want to update multiple fields of a record simultaneously.
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