diff --git a/server_extensions_api/src/main/java/com/generalbytes/batm/server/extensions/IExtensionContext.java b/server_extensions_api/src/main/java/com/generalbytes/batm/server/extensions/IExtensionContext.java
index 3cfa69391..648d14360 100644
--- a/server_extensions_api/src/main/java/com/generalbytes/batm/server/extensions/IExtensionContext.java
+++ b/server_extensions_api/src/main/java/com/generalbytes/batm/server/extensions/IExtensionContext.java
@@ -831,4 +831,14 @@ public static class EmbeddedEmailImage {
      * @param remoteOrLocalTransactionId
      */
     void markTransactionAsWithdrawn(String remoteOrLocalTransactionId);
+
+    /**
+     * Allows to manage the unlock time of a specific transaction.
+     * This can be used to unlock the transaction sooner or prolong it.
+     * Transactions that are locked will remain in the output queue and won't be flushed until they are unlocked.
+     *
+     * @param rid                Remote transaction ID
+     * @param serverTimeToUnlock The absolute datetime when the transaction should unlock.
+     */
+    void unlockTransaction(String rid, Date serverTimeToUnlock);
 }
diff --git a/server_extensions_api/src/main/java/com/generalbytes/batm/server/extensions/OutputQueueInsertConfig.java b/server_extensions_api/src/main/java/com/generalbytes/batm/server/extensions/OutputQueueInsertConfig.java
index 7586f457d..7fefbb31b 100644
--- a/server_extensions_api/src/main/java/com/generalbytes/batm/server/extensions/OutputQueueInsertConfig.java
+++ b/server_extensions_api/src/main/java/com/generalbytes/batm/server/extensions/OutputQueueInsertConfig.java
@@ -17,6 +17,8 @@
  ************************************************************************************/
 package com.generalbytes.batm.server.extensions;
 
+import java.util.Date;
+
 /**
  * Information about how a transaction should be inserted into an Output Queue.
  * This is initially configured in admin per Output Queue and it can be overridden by extensions for each transaction.
@@ -32,6 +34,7 @@ public class OutputQueueInsertConfig {
 
     private boolean secondaryManualApprovalRequired = false;
     private int secondaryDelaySeconds = 0;
+    private Date unlockTime;
 
     public boolean isSkipQueue() {
         return skipQueue;
@@ -81,6 +84,14 @@ public void setSecondaryDelaySeconds(int secondaryDelaySeconds) {
         this.secondaryDelaySeconds = secondaryDelaySeconds;
     }
 
+    public Date getUnlockTime() {
+        return unlockTime;
+    }
+
+    public void setUnlockTime(Date unlockTime) {
+        this.unlockTime = unlockTime;
+    }
+
     @Override
     public String toString() {
         return "OutputQueueInsertConfig{" +
@@ -90,6 +101,7 @@ public String toString() {
             ", insertIntoSecondaryQueue=" + insertIntoSecondaryQueue +
             ", secondaryManualApprovalRequired=" + secondaryManualApprovalRequired +
             ", secondaryDelaySeconds=" + secondaryDelaySeconds +
+            ", unlockTime=" + unlockTime +
             '}';
     }
 }
diff --git a/server_extensions_extra/src/main/java/com/generalbytes/batm/server/extensions/TestExtensionContext.java b/server_extensions_extra/src/main/java/com/generalbytes/batm/server/extensions/TestExtensionContext.java
index 0673499b7..3b0c6cd60 100644
--- a/server_extensions_extra/src/main/java/com/generalbytes/batm/server/extensions/TestExtensionContext.java
+++ b/server_extensions_extra/src/main/java/com/generalbytes/batm/server/extensions/TestExtensionContext.java
@@ -481,4 +481,8 @@ public boolean isGlobalServer() {
     public void markTransactionAsWithdrawn(String remoteOrLocalTransactionId) {
 
     }
+
+    @Override
+    public void unlockTransaction(String rid, Date serverTimeToUnlock) {
+    }
 }