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wildhen 
When I'm creating a new record the desciption changes it's ok but when I'm editing the record is adding a new description instead of change it
@api.onchange('quotation')
def _onchange_budget(self):
         if self.quotation:

        res = [(0, 1, {'description': self.quotation.description,
                       'quantity': 0,
                       'value': self.quotation.value
                       })]
        self.description = res
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Ashish Singh
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Hi, wildhen


It is because [(0, values)] always create a new record and seems like "description" is a many2many field here. So can follow below code in order to achieve this part.

@api.onchange('quotation')
def _onchange_budget(self):
         if self.quotation:
            if self.description:
                data = {'description': self.quotation.description,
                       'quantity': 0,
                       'value': self.quotation.value
                       }
                res = [(1, id, data) for id in self.description.ids]
            else:
                res = [(0, 1, {'description': self.quotation.description,
                       'quantity': 0,
                       'value': self.quotation.value
                       })]
            self.description = res

Thanks,
Ashish Singh(Team Lead)
Webkul Software Private Limited
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