[ACL-252] Add Payouts scheme_id field from GetTransactions (#253)

Co-authored-by: Claude <noreply@anthropic.com>

Author: federico1525

CHANGELOG.md

@@ -3,6 +3,10 @@ All notable changes to this project will be documented in this file.
 
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/).
 
+## [1.25.0] - 2025-10-14
+### Added
+- Added `SchemeId` field to `ExecutedPayout` and `Refund` transaction types in Merchant Account transactions endpoint response
+
 ## [1.24.0] - 2025-01-24
 ### Added
 - Enhanced RefundUnion to include all refund statuses: `RefundExecuted` and `RefundFailed` in addition to existing `RefundPending` and `RefundAuthorized`

src/TrueLayer/MerchantAccounts/Model/GetTransactions.cs

@@ -134,6 +134,7 @@ public sealed record PendingPayout(
     /// <inheritdoc cref="BaseTransactionPayout"/>
     /// <param name="ExecutedAt">The date and time the transaction was executed</param>
     /// <param name="ReturnedBy">Unique ID for the external payment that returned this payout</param>
+    /// <param name="SchemeId">The id of the scheme used to execute the payout</param>
     [JsonDiscriminator(Discriminator)]
     public sealed record ExecutedPayout(
         string Id,
@@ -145,7 +146,8 @@ public sealed record ExecutedPayout(
         PayoutBeneficiaryUnion Beneficiary,
         string ContextCode,
         string PayoutId,
-        string ReturnedBy)
+        string ReturnedBy,
+        string? SchemeId)
         : BaseTransactionPayout(
             Id,
             Currency,
@@ -171,6 +173,7 @@ public sealed record ExecutedPayout(
     /// <param name="RefundId">Unique ID for the refund</param>
     /// <param name="PaymentId">Unique ID for the payment</param>
     /// <param name="ReturnedBy">Unique ID for the external payment that returned this payout</param>
+    /// <param name="SchemeId">The id of the scheme used to execute the payout</param>
     [JsonDiscriminator(Discriminator)]
     public sealed record Refund(
         string Id,
@@ -183,7 +186,8 @@ public sealed record Refund(
         string ContextCode,
         string RefundId,
         string PaymentId,
-        string ReturnedBy)
+        string ReturnedBy,
+        string? SchemeId)
         : BaseTransaction(
             Id,
             Currency,