fix(connector): [adyen] refund sync error message

[AkshayaFoiger]

Type of Change

• Bugfix
• New feature
• Enhancement
• Refactoring
• Dependency updates
• Documentation
• CI/CD

Description

Earlier this is the error we got when we try to do a force Rsync.

Now the error message is fixed

How did you test it?

Create a refund with adyen

curl --location 'http://localhost:8080/refunds' \
--header 'Content-Type: application/json' \
--header 'Accept: application/json' \
--header 'api-key: dev_Zal39GC8aTRGqmAnHF9ZsWVwoBBQYPAN5pQgamTVEsBXTWgufK2kj3IgDGGW55Y9' \
--data '{"payment_id":"pay_mRbcZ3G1q3PAL2Lq5MLw","amount":600,"reason":"Customer returned product","refund_type":"instant","metadata":{"udf1":"value1","new_customer":"true","login_date":"2019-09-10T10:11:12Z"}}'

Response

{
    "refund_id": "ref_5BHQXAGKQIPRRtYFmDPv",
    "payment_id": "pay_mRbcZ3G1q3PAL2Lq5MLw",
    "amount": 600,
    "currency": "USD",
    "status": "pending",
    "reason": "Customer returned product",
    "metadata": {
        "udf1": "value1",
        "new_customer": "true",
        "login_date": "2019-09-10T10:11:12Z"
    },
    "error_message": null,
    "error_code": null,
    "unified_code": null,
    "unified_message": null,
    "created_at": "2026-07-03T07:21:34.761Z",
    "updated_at": "2026-07-03T07:21:35.067Z",
    "connector": "adyen",
    "profile_id": "pro_wIXI1oOHu593T0qtYGw0",
    "merchant_connector_id": "mca_RZM7mG61wTYVsEfNyqky",
    "split_refunds": null,
    "issuer_error_code": null,
    "issuer_error_message": null,
    "raw_connector_response": null,
    "connector_refund_id": "GG7R5LW7DLSCLR75"
}

Rsync with force sync true

curl --location 'http://localhost:8080/refunds/ref_5BHQXAGKQIPRRtYFmDPv?force_sync=true' \
--header 'Accept: application/json' \
--header 'api-key: dev_Zal39GC8aTRGqmAnHF9ZsWVwoBBQYPAN5pQgamTVEsBXTWgufK2kj3IgDGGW55Y9'

Response

{
    "error": {
        "type": "invalid_request",
        "message": "Refund Sync flow is not implemented",
        "code": "IR_00"
    }
}

Checklist

• I formatted the code cargo +nightly fmt --all
• I addressed lints thrown by cargo clippy
• I reviewed the submitted code
• I added unit tests for my changes where possible

[semanticdiff-com]

Review changes with  

Changed Files

File	Status
crates/hyperswitch_connectors/src/connectors/adyen.rs	97% smaller

[XyneSpaces]

Review Findings

This PR makes a minor string cleanup in the Adyen connector's refund sync error message. No blocking issues found.

[nit] String consistency

The error message format "Refund Sync flow" is now consistent with other connector error messages. Consider verifying that this pattern is applied to other connectors with similar NotImplemented errors for consistency.

[XyneSpaces]

dummy

[XyneSpaces]

💡 Error message change removes clarity about "not implemented"

The error message change from "Refund Sync flow not Implemented" to "Refund Sync flow" removes the explicit indication that this is an unimplemented feature. The new message could be interpreted as a generic error rather than a deliberate "not implemented" response.

Consider keeping the explicit indicator: "Refund Sync flow (not implemented)" or "Refund Sync flow — not supported".

[XyneSpaces]

test