> For the complete documentation index, see [llms.txt](https://api-portal.novapost.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://api-portal.novapost.com/changelog-1/documentation/post-shipments-calculations.md).

# POST /shipments/calculations

### General Information <a href="#general-information" id="general-information"></a>

| **Method Name**   | Shipment calculation                                                                                                                                                                                                                                                                   |
| ----------------- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| **HTTP Method**   | POST                                                                                                                                                                                                                                                                                   |
| **Route**         | <p><code>/v.1.0/shipments/calculations</code><br><code>/mobileapp/v.1.1/shipments/calculations</code><br><code>/ui/v.1.0/shipments/calculations</code> <br><br><code>ui/v.1.0/shipments/delivery-calculations</code><br><code>ui/site/v.1.0/shipments/delivery-calculations</code></p> |
| **Change Type**   | Changes to existing endpoint                                                                                                                                                                                                                                                           |
| **Authorization** | `Authorization: Bearer jwt-token…`                                                                                                                                                                                                                                                     |
| **Related Task**  | [APIGW-1769: \[APIGW\] Розрахунок об'ємної ваги \[дільник на 5000\], зміна формули для POST /shipments/calculationsDone](https://novaposhta.atlassian.net/browse/APIGW-1769)                                                                                                           |
| **Product**       | API Gateway                                                                                                                                                                                                                                                                            |
| **Data Source**   |                                                                                                                                                                                                                                                                                        |
| **System/module** | client-api, Мobile App, UI *(*`/ui/` `/mobileapp/` `/v.1.0/`)                                                                                                                                                                                                                          |

### Description <a href="#description" id="description"></a>

For endpoint shipments/calculations (`POST`, `/shipments/calculations`), the logic of volumetric weight (`volumetricWeight`) calculation is changed for shipments related to **Moldova**.

#### Essence of the change <a href="#essence-of-the-change" id="essence-of-the-change"></a>

* **BEFORE:**\
  For all countries volumetric weight was calculated as:\
  `volumetricWeight = length * width * height / 4000`
* **AFTER:**
  * For **shipments related to Moldova**, volumetric weight must be calculated as:\
    `volumetricWeight = length * width * height / 5000`. See rules below.
  * For **all other shipments** the formula with divisor **4000** remains unchanged.

`volumetricWeight` is calculated on API Gateway side even if `parcels[].volumetricWeight` is not sent in the request or is sent as `null`.

&#x20;

#### Rules when divisor 5000 must be applied (Moldova) <a href="#rules-when-divisor-5000-must-be-applied-moldova" id="rules-when-divisor-5000-must-be-applied-moldova"></a>

The formula with divisor **5000** is used if at least one of the following cases is true:

1. Domestic shipments within Moldova
   * Sender and recipient are in Moldova
   * `sender.countryCode = "MD"`
   * `recipient.countryCode = "MD"`
2. Shipments from Moldova and payer = sender or third person with a Moldovan contract
   * `sender.countryCode = "MD"`
   * Payer of the shipment:
     * `payerType = "Sender"` **OR**
     * `payerType = "ThirdPerson"` and the payer’s contract is **Moldovan**
3. Shipments to Moldova and payer = recipient or third person with a Moldovan contract
   * `recipient.countryCode = "MD"`
   * Payer of the shipment:
     * `payerType = "Recipient"` **OR**
     * `payerType = "ThirdPerson"` and the payer’s contract is **Moldovan**

&#x20;

#### Determining a “Moldovan” contract for ThirdPerson <a href="#determining-a-moldovan-contract-for-thirdperson" id="determining-a-moldovan-contract-for-thirdperson"></a>

If `payerType = "ThirdPerson"`, to determine that the payer is a third party under a **Moldovan** contract:

1. Take contract number from `payerContractNumber` in `/shipments` request.
2. Call `/api/contracts/` with:
   * `numbers[] = {payerContractNumber}`
   * `countryCodes[] = MD`
3. If the response for filter `countryCodes[] = MD` contains a contract with this number – the contract is considered Moldovan.\
   If not – the contract is **not** Moldovan and the formula with divisor 5000 **must not** be applied.

Example:

`GET /api/contracts/?numbers[]=GNPMD-00020861&countryCodes[]=MD`


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