Hi,

To display a warning popup in Odoo while allowing the program to continue, utilize the UserError exception from odoo.exceptions by checking conditions and raising it accordingly before continuing with the code execution.

For example, use the following code to solve the issue:

from odoo import models, fields, api, _

from odoo.exceptions import UserError

class AccountMove(models.Model):

    _inherit = 'account.move'

    @api.model

    def create(self, vals):

        credit = 0

        debit = 0

        message_test = False

        if "line_ids" in vals.keys():

            for line in vals['line_ids']:

                if line[2]['credit']:

                    account = self.env['account.account'].browse(line[2]['account_id'])

                    account_lines = self.env['account.move.line'].search([('account_id', '=', account.id)])

                    for lines in account_lines:

                        credit += lines.credit

                        debit += lines.debit

                    if account.account_credit_limit:

                        if (credit + line[2]['credit'] - debit) > account.account_credit_limit:

                            message_test = True

                            warning_message = _(

                                'Overdraft Limit will Exceed! \n Making this transaction will exceed the '

                                'Overdraft limit defined for the account "%s".' % account.name

                            )

        # Raise the warning outside the loop

        if message_test:

            raise UserError(warning_message)

        result = super(AccountMove, self).create(vals)

        return result

Hope it helps.