When creating an order through the rest api in Bitrix24, an extra company and contact are created for the specified companyId, what could be the problem?

Question

Bitrix24

Order creation code:
$params_add_sale = ['fields' => ['lid' => 's1',
'personTypeId' => 4,
'UserId' => 2,
'currency' => 'RUB',
'dateInsert' => $lastday,
'statusId' => 'N',
'companyId' => 819,
'responsibleId' => 20,
'userDescription'=> $number_dogovor.','.$date_dogovor,
'additionalInfo' => $k ['ID']]];

$method_add_sale = '/sale.order.add';
$data_add_sale = $bx->call($method_add_sale, $params_add_sale);

Answer:
Array
(
[result] => Array
(
[order] => Array
(
[accountNumber] => 3824
[additionalInfo] => 1377
[canceled] => N
[clients] => Array
(
[0] => Array
(
[entityId] = > 1573
[entityTypeId] => 3
[id] => 4627
[isPrimary] => Y
[orderId] => 3824
)

[1] => Array
(
[entityId] => 1055
[entityTypeId] => 4
[id] => 4628
[isPrimary] => Y
[orderId] => 3824
)

)

[companyId] => 819
[currency] = > RUB
[dateInsert] => 2021-09-09T00:00:00+03:00
[dateStatus] => 2021-03-20T12:00:15+03:00
[dateUpdate] => 2021-03-20T12:00:15+03:00
[deducted] => N
[empStatusId] => 20
[id] => 3824
[lid] => s1
[payed] => N
[personTypeId ] => 4
[personTypeXmlId] =>
[propertyValues] => Array
(
...
)

[requisiteLink] => Array
(
...
)

[responsibleId] => 8
[statusId] => N
[statusXmlId] =>
[updated1c] => N
[userDescription] => 131К-01\20.01.02.2020
[userId] => 2
[xmlId] => bx_6055b99f37929
)

)

)

the clients field says about that a new company and contact has been created.

Answer 1

This is a bug (or feature of behavior) that needs to be reported to technical support.
As far as I know, at the moment the connection between the order and the contacts/company via the rest api is not debugged.