diff --git a/stroom-state/stroom-planb-impl/src/main/java/stroom/planb/impl/data/FileTransferClientImpl.java b/stroom-state/stroom-planb-impl/src/main/java/stroom/planb/impl/data/FileTransferClientImpl.java
index 4780e76092..feb14223d1 100644
--- a/stroom-state/stroom-planb-impl/src/main/java/stroom/planb/impl/data/FileTransferClientImpl.java
+++ b/stroom-state/stroom-planb-impl/src/main/java/stroom/planb/impl/data/FileTransferClientImpl.java
@@ -91,6 +91,7 @@ public void storePart(final FileDescriptor fileDescriptor,
                             }
                         }
                     } catch (final Exception e) {
+                        LOGGER.error(e::getMessage, e);
                         throw new RuntimeException(e.getMessage(), e);
                     }
                 }
@@ -109,6 +110,7 @@ public void storePart(final FileDescriptor fileDescriptor,
                     }
                 }
             } catch (final IOException e) {
+                LOGGER.error(e::getMessage, e);
                 throw new UncheckedIOException(e);
             }
         });
diff --git a/stroom-state/stroom-planb-impl/src/main/java/stroom/planb/impl/data/FileTransferResourceImpl.java b/stroom-state/stroom-planb-impl/src/main/java/stroom/planb/impl/data/FileTransferResourceImpl.java
index 464d4fd3b8..f250a91d31 100644
--- a/stroom-state/stroom-planb-impl/src/main/java/stroom/planb/impl/data/FileTransferResourceImpl.java
+++ b/stroom-state/stroom-planb-impl/src/main/java/stroom/planb/impl/data/FileTransferResourceImpl.java
@@ -20,6 +20,7 @@
 import stroom.event.logging.rs.api.AutoLogged.OperationType;
 import stroom.util.logging.LambdaLogger;
 import stroom.util.logging.LambdaLoggerFactory;
+import stroom.util.logging.LogUtil;
 import stroom.util.shared.PermissionException;
 
 import jakarta.inject.Inject;
@@ -31,6 +32,7 @@
 import jakarta.ws.rs.core.StreamingOutput;
 
 import java.io.InputStream;
+import java.util.function.Supplier;
 
 @AutoLogged(OperationType.UNLOGGED)
 public class FileTransferResourceImpl implements FileTransferResource {
@@ -47,6 +49,7 @@ public FileTransferResourceImpl(final Provider<FileTransferService> fileTransfer
     @AutoLogged(OperationType.UNLOGGED)
     @Override
     public Response fetchSnapshot(final SnapshotRequest request) {
+        LOGGER.debug(() -> "Snapshot request: " + request);
         try {
             // Check the status before we start streaming snapshot data as it is hard to capture meaningful errors mid
             // stream.
@@ -54,20 +57,26 @@ public Response fetchSnapshot(final SnapshotRequest request) {
 
             // Stream the snapshhot content to the client as ZIP data
             final StreamingOutput streamingOutput = output -> {
-                fileTransferServiceProvider.get().fetchSnapshot(request, output);
+                try {
+                    fileTransferServiceProvider.get().fetchSnapshot(request, output);
+                } catch (final Exception e) {
+                    LOGGER.error(e::getMessage, e);
+                    throw e;
+                }
             };
 
+            LOGGER.debug(() -> "Sending snapshot: " + request);
             return Response
                     .ok(streamingOutput, MediaType.APPLICATION_OCTET_STREAM)
                     .build();
         } catch (final NotModifiedException e) {
-            LOGGER.debug(e::getMessage, e);
+            LOGGER.debug(() -> "Snapshot not modified: " + request + " " + e.getMessage(), e);
             throw new WebApplicationException(e.getMessage(), Status.NOT_MODIFIED);
         } catch (final PermissionException e) {
-            LOGGER.debug(e::getMessage, e);
+            LOGGER.error(() -> "Snapshot permission exception : " + request + " " + e.getMessage(), e);
             throw new WebApplicationException(e.getMessage(), Status.UNAUTHORIZED);
         } catch (final Exception e) {
-            LOGGER.debug(e::getMessage, e);
+            LOGGER.debug(() -> "Snapshot not found: " + request + " " + e.getMessage(), e);
             throw new WebApplicationException(e.getMessage(), Status.NOT_FOUND);
         }
     }
@@ -79,18 +88,27 @@ public Response sendPart(final long createTime,
                              final String fileHash,
                              final String fileName,
                              final InputStream inputStream) {
+        final Supplier<String> messageDetail = () -> LogUtil.message(
+                "createTime={}, metaId={}, fileHash={}, fileName={}",
+                createTime,
+                metaId,
+                fileHash,
+                fileName);
+
         try {
+            LOGGER.debug(() -> "Receiving part: " + messageDetail.get());
             fileTransferServiceProvider.get().receivePart(createTime, metaId, fileHash, fileName, inputStream);
+            LOGGER.debug(() -> "Successfully received part: " + messageDetail.get());
             return Response
                     .ok()
                     .build();
         } catch (final PermissionException e) {
-            LOGGER.debug(e::getMessage, e);
+            LOGGER.error(LogUtil.message("Permission exception receiving part: " + messageDetail.get()), e);
             return Response
                     .status(Status.UNAUTHORIZED.getStatusCode(), e.getMessage())
                     .build();
         } catch (final Exception e) {
-            LOGGER.debug(e::getMessage, e);
+            LOGGER.error(LogUtil.message("Exception receiving part: " + messageDetail.get()), e);
             return Response
                     .status(Status.INTERNAL_SERVER_ERROR.getStatusCode(), e.getMessage())
                     .build();
diff --git a/stroom-state/stroom-planb-impl/src/main/java/stroom/planb/impl/data/SnapshotRequest.java b/stroom-state/stroom-planb-impl/src/main/java/stroom/planb/impl/data/SnapshotRequest.java
index df4b6c9229..a8760a4d75 100644
--- a/stroom-state/stroom-planb-impl/src/main/java/stroom/planb/impl/data/SnapshotRequest.java
+++ b/stroom-state/stroom-planb-impl/src/main/java/stroom/planb/impl/data/SnapshotRequest.java
@@ -8,6 +8,8 @@
 import com.fasterxml.jackson.annotation.JsonProperty;
 import com.fasterxml.jackson.annotation.JsonPropertyOrder;
 
+import java.util.Objects;
+
 @JsonPropertyOrder(alphabetic = true)
 @JsonInclude(Include.NON_NULL)
 public class SnapshotRequest {
@@ -22,7 +24,7 @@ public class SnapshotRequest {
     @JsonCreator
     public SnapshotRequest(@JsonProperty("planBDocRef") final DocRef planBDocRef,
                            @JsonProperty("effectiveTime") final long effectiveTime,
-                           @JsonProperty("currentSnapshotTime")final Long currentSnapshotTime) {
+                           @JsonProperty("currentSnapshotTime") final Long currentSnapshotTime) {
         this.planBDocRef = planBDocRef;
         this.effectiveTime = effectiveTime;
         this.currentSnapshotTime = currentSnapshotTime;
@@ -39,4 +41,32 @@ public long getEffectiveTime() {
     public Long getCurrentSnapshotTime() {
         return currentSnapshotTime;
     }
+
+    @Override
+    public boolean equals(final Object o) {
+        if (this == o) {
+            return true;
+        }
+        if (o == null || getClass() != o.getClass()) {
+            return false;
+        }
+        final SnapshotRequest request = (SnapshotRequest) o;
+        return effectiveTime == request.effectiveTime &&
+               Objects.equals(planBDocRef, request.planBDocRef) &&
+               Objects.equals(currentSnapshotTime, request.currentSnapshotTime);
+    }
+
+    @Override
+    public int hashCode() {
+        return Objects.hash(planBDocRef, effectiveTime, currentSnapshotTime);
+    }
+
+    @Override
+    public String toString() {
+        return "SnapshotRequest{" +
+               "planBDocRef=" + planBDocRef +
+               ", effectiveTime=" + effectiveTime +
+               ", currentSnapshotTime=" + currentSnapshotTime +
+               '}';
+    }
 }