Quote::prepareFilterField

public function prepareFilterField(string $field): string
{
	if(in_array(
		$field,
		['PRODUCT_ID', 'STATUS_ID', 'COMPANY_ID', 'LEAD_ID','DEAL_ID', 'CONTACT_ID', 'MYCOMPANY_ID']
	))
	{
		return '=' . $field;
	}

	return $field;
}