# A2C

Maximum amount for an A2C transaction request is **29,999.00 UAH**.

Exceeding this limit results in an error:

```
ERROR: @Payment coin amount exceeds the limit
```

#### Input parameters of the JWS payload part:

<table data-header-hidden><thead><tr><th></th><th width="197.800048828125"></th><th width="180.5999755859375"></th><th width="93"></th><th></th></tr></thead><tbody><tr><td>Parameter</td><td>Description</td><td>Data Format</td><td>Required</td><td>Example</td></tr><tr><td><strong>merchantRequestId</strong></td><td>Unique identifier generated by the merchant system, used to check the transaction status in case of an unknown error or disconnection.</td><td>string(36)</td><td>Yes</td><td>137d9304-0368-11ed-b939-0242ac120002</td></tr><tr><td><strong>encryptedCardNumber</strong></td><td>Recipient's card number encrypted in JWE format using a payment key.</td><td>string</td><td>Yes</td><td>5473670000000304 (decrypted form)</td></tr><tr><td><strong>coinAmount</strong></td><td>Payment amount.</td><td>int</td><td>Yes</td><td>2000</td></tr><tr><td><strong>merchantId</strong></td><td>Merchant ID generated in Ecom.</td><td>string(36)</td><td>Yes</td><td>137d9304-0368-11ed-b939-0242ac120002</td></tr><tr><td><strong>date</strong></td><td>Date and time of the transaction.</td><td>string</td><td>Yes</td><td>{{currentdateT}}.00+00:00</td></tr><tr><td><strong>notificationUrl</strong></td><td>URL where the callback will be sent.</td><td>string</td><td>No</td><td>https://merchant.notification_url</td></tr><tr><td><strong>notificationEncryption</strong></td><td>Indicator for callback data encryption.</td><td>string</td><td>No</td><td>true/false (If not provided or set to false, callback data will not be encrypted.)</td></tr><tr><td><strong>comment</strong></td><td>Additional payment information.</td><td>string</td><td>No</td><td>///5555.25412</td></tr><tr><td><strong>purpose</strong></td><td>Payment purpose.</td><td>string</td><td>No</td><td>For goods</td></tr><tr><td><strong>merchantComment</strong></td><td>Additional merchant order comment.</td><td>string(255) <br><br>a-zA-Z0-9 ,.;:@#$%'-=+1,256$</td><td>No</td><td>merchant Comment id 1258728c1</td></tr><tr><td><strong>senderAccount</strong></td><td>Sender's account number.</td><td>string</td><td>No</td><td>2900000000000</td></tr><tr><td><strong>customerData</strong></td><td>Object containing customer data.</td><td>object</td><td>Yes</td><td>-</td></tr><tr><td><strong>senderCustomerId</strong></td><td>Sender's customer ID.</td><td>string(255)</td><td>No</td><td>1258728c1</td></tr><tr><td><strong>senderFirstName</strong></td><td>Sender's first name.</td><td><p>string(30)<br></p><ul><li>the value cannot contain only numbers</li><li>cannot contain periods or other special characters</li><li>cannot contain “NULL”, “3D SECURE”, “SURNAME”, “CARDHOLDER”, ”UNKNOWN”</li><li>only alphanumeric values ​​are allowed</li><li>can accept a space and a hyphen, but can NOT consist exclusively of “ ” or “-“</li><li>a hyphen or space can be inside, but not at the beginning or end</li><li>For the apostrophe character, use the only available utf8 character - ' which in: utf 16 - u0027 utf32 - 00000027</li></ul></td><td>No</td><td>Ivanenko</td></tr><tr><td><strong>senderLastName</strong></td><td>Sender's last name.</td><td><p></p><p>string(30)</p><ul><li>periods or other special characters</li><li>cannot contain “NULL”, “3D SECURE”, “SURNAME”, “CARDHOLDER”, ”UNKNOWN”</li><li>only alphanumeric values ​​are allowed</li><li>can accept a space and a hyphen, but can NOT consist exclusively of “ ” or “-“</li><li>a hyphen or space can be inside, but not at the beginning or end</li><li>For the apostrophe character, use the only available utf8 character - ' which in: utf 16 - u0027 utf32 - 00000027</li></ul></td><td>No</td><td>Ivan</td></tr><tr><td><strong>senderMiddleName</strong></td><td>Sender's middle name.</td><td><p>string(30)</p><ul><li>periods or other special characters</li><li>cannot contain “NULL”, “3D SECURE”, “SURNAME”, “CARDHOLDER”, ”UNKNOWN”</li><li>only alphanumeric values ​​are allowed</li><li>can accept a space and a hyphen, but can NOT consist exclusively of “ ” or “-“</li><li>a hyphen or space can be inside, but not at the beginning or end</li><li>For the apostrophe character, use the only available utf8 character - ' which in: utf 16 - u0027 utf32 - 00000027</li></ul></td><td>No</td><td>Ivanovich</td></tr><tr><td><strong>senderEmail</strong></td><td>Sender's email.</td><td>string(256)</td><td>No</td><td>mail@gmail.com</td></tr><tr><td><strong>senderCountry</strong></td><td>Sender's country.</td><td>string(3)<br>ISO 3166, 804 for Ukraine</td><td>No</td><td>804</td></tr><tr><td><strong>senderRegion</strong></td><td>Sender's region.</td><td>string(255)</td><td>No</td><td>Kyivska</td></tr><tr><td><strong>senderCity</strong></td><td>Sender's city.</td><td>string(25)</td><td>No</td><td>Kyiv</td></tr><tr><td><strong>senderStreet</strong></td><td>Sender's street address.</td><td>string(35)</td><td>No</td><td>Sichovykh Striltsiv</td></tr><tr><td><strong>senderAdditionalAddress</strong></td><td>Additional address details (floor, house number, apartment).</td><td>string(255)</td><td>No</td><td>23</td></tr><tr><td><strong>senderItn</strong></td><td>Sender's tax identification number.</td><td>string(20)</td><td>No</td><td>123456789</td></tr><tr><td><strong>senderPassport</strong></td><td>Sender's passport number.</td><td>string(255)</td><td>No</td><td>AN123456</td></tr><tr><td><strong>senderIp</strong></td><td>Sender's IP address.</td><td>string(50)</td><td>No</td><td>123.12.12.12</td></tr><tr><td><strong>senderPhone</strong></td><td>Sender's phone number.</td><td>string(20)</td><td>No</td><td>380630000000</td></tr><tr><td><strong>senderBirthday</strong></td><td>Sender's birth date.</td><td>string(50)</td><td>No</td><td>31.12.2000</td></tr><tr><td><strong>senderGender</strong></td><td>Sender's gender.</td><td>string(50)</td><td>No</td><td>Male/Female</td></tr><tr><td><strong>senderZipCode</strong></td><td>Sender's postal code.</td><td>string(50)</td><td>No</td><td>49000</td></tr><tr><td><strong>recipientCustomerId</strong></td><td>Recipient's customer ID.</td><td>string(255)</td><td>Yes</td><td>1258728c1</td></tr><tr><td><strong>recipientFirstName</strong></td><td>Recipient's first name.</td><td><p></p><p>string(30)</p><ul><li>periods or other special characters</li><li>cannot contain “NULL”, “3D SECURE”, “SURNAME”, “CARDHOLDER”, ”UNKNOWN”</li><li>only alphanumeric values ​​are allowed</li><li>can accept a space and a hyphen, but can NOT consist exclusively of “ ” or “-“</li><li>a hyphen or space can be inside, but not at the beginning or end</li><li>For the apostrophe character, use the only available utf8 character - ' which in: utf 16 - u0027 utf32 - 00000027</li></ul></td><td>No</td><td>Ivanenko</td></tr><tr><td><strong>recipientLastName</strong></td><td>Recipient's last name.</td><td><p></p><p>string(30)</p><ul><li>periods or other special characters</li><li>cannot contain “NULL”, “3D SECURE”, “SURNAME”, “CARDHOLDER”, ”UNKNOWN”</li><li>only alphanumeric values ​​are allowed</li><li>can accept a space and a hyphen, but can NOT consist exclusively of “ ” or “-“</li><li>a hyphen or space can be inside, but not at the beginning or end</li><li>For the apostrophe character, use the only available utf8 character - ' which in: utf 16 - u0027 utf32 - 00000027</li></ul></td><td>No</td><td>Ivan</td></tr><tr><td><strong>recipientMiddleName</strong></td><td>Recipient's middle name.</td><td><p></p><p>string(30)</p><ul><li>periods or other special characters</li><li>cannot contain “NULL”, “3D SECURE”, “SURNAME”, “CARDHOLDER”, ”UNKNOWN”</li><li>only alphanumeric values ​​are allowed</li><li>can accept a space and a hyphen, but can NOT consist exclusively of “ ” or “-“</li><li>a hyphen or space can be inside, but not at the beginning or end</li><li>For the apostrophe character, use the only available utf8 character - ' which in: utf 16 - u0027 utf32 - 00000027</li></ul></td><td>No</td><td>Ivanovich</td></tr><tr><td><strong>recipientEmail</strong></td><td>Recipient's email.</td><td>string(256)</td><td>No</td><td>mail@gmail.com</td></tr><tr><td><strong>recipientCountry</strong></td><td>Recipient's country (ISO 3166, 804 for Ukraine).</td><td>string(3)</td><td>No</td><td>804</td></tr><tr><td><strong>recipientRegion</strong></td><td>Recipient's region.</td><td>string(255)</td><td>No</td><td>Kyivska</td></tr><tr><td><strong>recipientCity</strong></td><td>Recipient's city.</td><td>string(25)</td><td>No</td><td>Kyiv</td></tr><tr><td><strong>recipientStreet</strong></td><td>Recipient's street address.</td><td>string(35)</td><td>No</td><td>Sichovykh Striltsiv</td></tr><tr><td><strong>recipientAdditionalAddress</strong></td><td>Additional recipient's address details.</td><td>string(255)</td><td>No</td><td>23</td></tr><tr><td><strong>recipientItn</strong></td><td><p>Recipient's tax identification number.</p><p></p><ul><li>If an individual has officially refused to receive a TIN, it is necessary to pass an alternative parameter - <strong><code>recipientPassport</code></strong> with the correct passport data of the recipient.</li></ul></td><td>string(20)</td><td>Yes, if <strong>recipientPassport</strong> is not specified</td><td>123456789</td></tr><tr><td><strong>recipientPassport</strong></td><td>Recipient's passport number.</td><td>string(255)</td><td>Yes, if <strong>recipientItn</strong> is not specified</td><td>AN123456</td></tr><tr><td><strong>recipientIp</strong></td><td>Recipient's IP address.</td><td>string(50)</td><td>No</td><td>123.12.12.12</td></tr><tr><td><strong>recipientPhone</strong></td><td>Recipient's phone number.</td><td>string(20)</td><td>No</td><td>380630000000</td></tr><tr><td><strong>recipientBirthday</strong></td><td>Recipient's birth date.</td><td>string(50)</td><td>No</td><td>31.12.2000</td></tr><tr><td><strong>recipientGender</strong></td><td>Recipient's gender.</td><td>string(50)</td><td>No</td><td>Male/Female</td></tr><tr><td><strong>recipientZipCode</strong></td><td>Recipient's postal code.</td><td>string(50)</td><td>No</td><td>49000</td></tr></tbody></table>

#### Output parameters of the JWS payload part:

<table><thead><tr><th width="157">Parameter</th><th width="201">Description</th><th width="190">Data Format</th><th width="230">Example</th></tr></thead><tbody><tr><td>type</td><td>Transaction type</td><td>string</td><td>ACCOUNT_2_CARD</td></tr><tr><td>rrn</td><td>RRN transaction number in MPS</td><td>string</td><td>2554256963</td></tr><tr><td>purpose</td><td>Payment purpose</td><td>string</td><td>For goods</td></tr><tr><td>comment</td><td>Comment</td><td>string</td><td>test</td></tr><tr><td>coinAmount</td><td>Payment amount</td><td>int</td><td>2000</td></tr><tr><td>merchantId</td><td>Merchant ID</td><td>string</td><td>137d9304-0368-11ed-b939-0242ac120002</td></tr><tr><td>operationId</td><td>Transaction ID</td><td>string</td><td>1712844596346b9F-WwrWZpq</td></tr><tr><td>ecomOperationId</td><td>Transaction ID in Ecom system</td><td>string</td><td>8c3303e9-7396-43b8-af4e-31d9facdde9b</td></tr><tr><td>merchantName</td><td>Merchant name</td><td>string</td><td>KB test terminal</td></tr><tr><td>approvalCode</td><td>Authorization code</td><td>string</td><td>39203</td></tr><tr><td>status</td><td>Transaction status</td><td>string</td><td>SUCCESS FAIL PENDING REQUIRED_3DS DESIRED_THREEDS_MODE_ERROR</td></tr><tr><td>transactionType</td><td>Transaction type in numerical format</td><td>string</td><td>46</td></tr><tr><td>merchantRequestId</td><td>Merchant request ID</td><td>string</td><td>72837906-f526-4aef-8d11-58d80b44cb75</td></tr><tr><td>transactionCurrency</td><td>Payment currency</td><td>string</td><td>980</td></tr><tr><td>merchantCommission</td><td>Commission amount</td><td>string</td><td>2</td></tr><tr><td>createDateTime</td><td>Payment creation date</td><td>string</td><td>##########</td></tr><tr><td>modificationDateTime</td><td>Payment modification date</td><td>string</td><td>##########</td></tr><tr><td>actionCode</td><td>Response code</td><td>string</td><td>0</td></tr><tr><td>responseCode</td><td>Response details</td><td>string</td><td>0</td></tr><tr><td>description</td><td>Response description</td><td>string</td><td>approved</td></tr><tr><td>bankCode</td><td>Issuer bank name</td><td>string</td><td>BANK_ALLIANCE</td></tr><tr><td>paymentSystem</td><td>Issuer MPS name</td><td>string</td><td>MasterCard</td></tr><tr><td>productType</td><td>Terminal product type</td><td>string</td><td>A2C</td></tr><tr><td>notificationUrl</td><td>Callback notification URL</td><td>string</td><td>https://merchant.notification_url/</td></tr><tr><td>paymentServiceType</td><td>Payment type</td><td>string</td><td>CARD/APPLE_PAY/GOOGLE_PAY</td></tr><tr><td>notificationEncryption</td><td>Callback encryption flag</td><td>string</td><td>true/false If not provided or set to false, Callback data will be unencrypted</td></tr><tr><td>cardNumberMask</td><td>Masked card number</td><td>string</td><td>5573********0304</td></tr><tr><td>desiredThreeDSMode</td><td>Merchant preference for 3DS</td><td>string</td><td>MUST/SHOULD/MUST_NOT</td></tr><tr><td>threeDSMode</td><td>Indicates if 3DS was used</td><td>string</td><td>MUST - processed with 3DS, MUST_NOT - processed without 3DS</td></tr><tr><td>statusThreeDs</td><td>3DS transaction status</td><td>string</td><td>Y - successful, N - failed</td></tr><tr><td>threeDSServerTransId</td><td>Transaction ID in 3DS system</td><td>string</td><td>b6c35fdb-28c1-454d-a2f3-51098c26bda4</td></tr><tr><td>processingMerchantId</td><td>Merchant ID in processing center</td><td>string</td><td>AE100000</td></tr><tr><td>processingTerminalId</td><td>Terminal ID in processing center</td><td>string</td><td>AE100000</td></tr><tr><td>redirect3dsUrl</td><td>URL for client redirection to issuer page for 3DS authentication</td><td>string</td><td>https://api-ecom-release.develop.bankalliance.ua/threeDS/getRedirectHtml/1702047427621BHu5X99yDbA</td></tr><tr><td>txnType</td><td>Transaction subtype</td><td>enum</td><td>Possible values: NONCVV/noncvv - No CVV entry or verification required</td></tr><tr><td>Parameter</td><td>Description</td><td>Data Format</td><td>Example</td></tr><tr><td>senderCustomerId</td><td>Sender customer ID</td><td>string</td><td>1258728c1</td></tr><tr><td>senderFirstName</td><td>Sender first name</td><td>string</td><td>Ivanenko</td></tr><tr><td>senderLastName</td><td>Sender last name</td><td>string</td><td>Ivan</td></tr><tr><td>senderMiddleName</td><td>Sender middle name</td><td>string</td><td>Ivanovych</td></tr><tr><td>senderEmail</td><td>Sender email</td><td>string</td><td>mail@gmail.com</td></tr><tr><td>senderCountry</td><td>Sender country</td><td>string</td><td>Ukraine</td></tr><tr><td>senderRegion</td><td>Sender region</td><td>string</td><td>Kyivska</td></tr><tr><td>senderCity</td><td>Sender city</td><td>string</td><td>Kyiv</td></tr><tr><td>senderStreet</td><td>Sender street</td><td>string</td><td>Sichovykh Striltsiv</td></tr><tr><td>senderAdditionalAddress</td><td>Additional sender address details (floor, house number, apartment)</td><td>string</td><td>23</td></tr><tr><td>senderItn</td><td>Sender tax ID</td><td>string</td><td>123456789</td></tr><tr><td>senderPassport</td><td>Sender passport number</td><td>string</td><td>AN123456</td></tr><tr><td>senderIp</td><td>Sender IP address</td><td>string</td><td>123.12.12.12</td></tr><tr><td>senderPhone</td><td>Sender phone number</td><td>string</td><td>3,8063E+11</td></tr><tr><td>senderBirthday</td><td>Sender date of birth</td><td>string</td><td>31.12.2000</td></tr><tr><td>senderGender</td><td>Sender gender</td><td>string</td><td>M</td></tr><tr><td>senderZipCode</td><td>Sender ZIP code</td><td>string</td><td>12000</td></tr><tr><td>senderBankCode</td><td>Sender issuer bank name</td><td>string</td><td>BANK_ALLIANCE</td></tr><tr><td>senderPaymentSystem</td><td>Sender issuer MPS name</td><td>string</td><td>MasterCard</td></tr><tr><td>senderCardNumberMask</td><td>Masked sender card number</td><td>string</td><td>5573********0304</td></tr><tr><td>Parameter</td><td>Description</td><td>Data Format</td><td>Example</td></tr><tr><td>recipientCustomerId</td><td>Recipient customer ID</td><td>string</td><td>1258728c1</td></tr><tr><td>recipientFirstName</td><td>Recipient first name</td><td>string</td><td>Ivanenko</td></tr><tr><td>recipientLastName</td><td>Recipient last name</td><td>string</td><td>Ivan</td></tr><tr><td>recipientMiddleName</td><td>Recipient middle name</td><td>string</td><td>Ivanovych</td></tr><tr><td>recipientEmail</td><td>Recipient email</td><td>string</td><td>mail@gmail.com</td></tr><tr><td>recipientCountry</td><td>Recipient country</td><td>string</td><td>Ukraine</td></tr><tr><td>recipientRegion</td><td>Recipient region</td><td>string</td><td>Kyivska</td></tr><tr><td>recipientCity</td><td>Recipient city</td><td>string</td><td>Kyiv</td></tr><tr><td>recipientStreet</td><td>Recipient street</td><td>string</td><td>Sichovykh Striltsiv</td></tr><tr><td>recipientAdditionalAddress</td><td>Additional recipient address details (floor, house number, apartment)</td><td>string</td><td>23</td></tr><tr><td>recipientItn</td><td>Recipient tax ID</td><td>string</td><td>123456789</td></tr><tr><td>recipientPassport</td><td>Recipient passport number</td><td>string</td><td>AN123456</td></tr><tr><td>recipientIp</td><td>Recipient IP address</td><td>string</td><td>123.12.12.12</td></tr><tr><td>recipientPhone</td><td>Recipient phone number</td><td>string</td><td>3,8063E+11</td></tr><tr><td>recipientBirthday</td><td>Recipient date of birth</td><td>string</td><td>31.12.2000</td></tr><tr><td>recipientGender</td><td>Recipient gender</td><td>string</td><td>M</td></tr><tr><td>recipientZipCode</td><td>Recipient ZIP code</td><td>string</td><td>12000</td></tr><tr><td>recipientBankCode</td><td>Recipient issuer bank name</td><td>string</td><td>BANK_ALLIANCE</td></tr><tr><td>recipientPaymentSystem</td><td>Recipient issuer MPS name</td><td>string</td><td>MasterCard</td></tr><tr><td>recipientCardNumberMask</td><td>Masked recipient card number</td><td>string</td><td>5573********0304</td></tr></tbody></table>

#### Examples :&#x20;

<details>

<summary>JWS Payload - the request body before signing up</summary>

```json
{
"encryptedCardNumber":"{{encryptedPanT}}",
"merchantId":"137d9304-0368-11ed-b939-0242ac120002",
"merchantRequestId":"{{requestUUIDT}}",
"purpose":"за товар",
"coinAmount": 120,
"notificationUrl":"https://api-ecom-prod.bankalliance.ua/mock",
"ecomComment": "string",
"senderAccount": "UA12305299260022119999",
"customerData": {
        "senderCustomerId": "1234567",
        "senderFirstName": "John",
        "senderLastName": "Doe",
        "senderMiddleName": "Fall",
        "senderEmail": "test@gmail.com",
        "senderCountry": "sender_country",
        "senderRegion": "sender_region",
        "senderCity": "sender_city",
        "senderStreet": "sender_street",
        "senderAdditionalAddress": "N 6",
        "senderItn": "12345",
        "senderPassport": "12345",
        "senderIp": "165.222.87.224",
        "senderPhone": "380967542344",
        "senderBirthday": "12/12/2000",
        "senderGender": "Male",
        "senderZipCode": "12345",
        "recipientCustomerId": "1234567",
        "recipientFirstName": "Yura",
        "recipientLastName": "Bura",
        "recipientMiddleName": "TestMiddle",
        "recipientEmail": "res@gmail",
        "recipientCountry": "804",
        "recipientRegion": "res_reg",
        "recipientCity": "res_dnipro",
        "recipientStreet": "res_street",
        "recipientAdditionalAddress": "res_addres",
        "recipientItn": "res_iin",
        "recipientPassport": "res_pasport",
        "recipientIp": "165.222.87.224",
        "recipientPhone": "380967542344",
        "recipientBirthday": "12/12/2000",
        "recipientGender": "Female",
        "recipientZipCode": "77777"
    },
"date": "{{currentdateT}}.00+00:00"
}
```

</details>

<details>

<summary>JWS Payload - the response body before signing up</summary>

```json
{
    "type": "ACCOUNT_2_CARD",
    "rrn": "410208187340",
    "purpose": "за товар",
    "comment": null,
    "coinAmount": 120,
    "merchantId": "137d9304-0368-11ed-b939-0242ac120002",
    "operationId": "1712822901491QtPAxAWOrrg",
    "ecomOperationId": "ff1ae4eb-d66d-467e-896d-01ed579bd040",
    "merchantName": null,
    "approvalCode": null,
    "status": "PENDING",
    "transactionType": 46,
    "merchantRequestId": "cf17607f-c1f8-4e8e-abb2-5fd1b3dd17ec",
    "transactionCurrency": "980",
    "merchantCommission": null,
    "createDateTime": "2024.09.19 15:29:25.675",
    "modificationDateTime": "2024.09.19 15:29:25.675",
    "transactionResponseInfo": {
        "actionCode": null,
        "responseCode": null,
        "description": "Операція успішна"
    },
    "bankCode": null,
    "paymentSystem": null,
    "productType": "A2C",
    "notificationUrl": "https://api-ecom-prod.bankalliance.ua/mock",
    "paymentServiceType": "CARD",
    "notificationEncryption": false,
    "senderAccount": "UA12305299260022119999",
    "recipientCardNumberMask": null,
    "senderCustomerId": null,
    "senderFirstName": "Petro",
    "senderLastName": "Petrenko",
    "senderMiddleName": null,
    "senderEmail": null,
    "senderCountry": "803",
    "senderRegion": null,
    "senderCity": "Kyiv",
    "senderStreet": "L.Ukrainki01",
    "senderAdditionalAddress": null,
    "senderItn": null,
    "senderPassport": null,
    "senderIp": null,
    "senderPhone": null,
    "senderBirthday": null,
    "senderGender": null,
    "senderZipCode": null,
    "recipientCustomerId": null,
    "recipientFirstName": "TestFirstname",
    "recipientLastName": "TestLastName",
    "recipientMiddleName": null,
    "recipientEmail": null,
    "recipientCountry": "803",
    "recipientRegion": null,
    "recipientCity": "Kyiv",
    "recipientStreet": "T. Shevchenka, 11",
    "recipientAdditionalAddress": null,
    "recipientItn": null,
    "recipientPassport": null,
    "recipientIp": null,
    "recipientPhone": null,
    "recipientBirthday": null,
    "recipientGender": null,
    "recipientZipCode": null,
    "recipientBankCode": null,
    "recipientPaymentSystem": null
}
```

</details>


---

# Agent Instructions: Querying This Documentation

If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter:

```
GET https://docs.merchant.alb.ua/en/authorization-2.0/payment-methods-h2h/a2c.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.