diff --git a/ebl/pom.xml b/ebl/pom.xml
index 957e302f..b80fc027 100644
--- a/ebl/pom.xml
+++ b/ebl/pom.xml
@@ -38,5 +38,11 @@
 			<artifactId>opencsv</artifactId>
 			<version>5.9</version>
 		</dependency>
+		<dependency>
+			<groupId>commons-codec</groupId>
+			<artifactId>commons-codec</artifactId>
+			<version>1.17.1</version>
+			<scope>compile</scope>
+		</dependency>
 	</dependencies>
 </project>
diff --git a/ebl/src/main/java/org/dcsa/conformance/standards/ebl/action/UC6_Carrier_PublishDraftTransportDocumentAction.java b/ebl/src/main/java/org/dcsa/conformance/standards/ebl/action/UC6_Carrier_PublishDraftTransportDocumentAction.java
index c36c48cf..f65dcc17 100644
--- a/ebl/src/main/java/org/dcsa/conformance/standards/ebl/action/UC6_Carrier_PublishDraftTransportDocumentAction.java
+++ b/ebl/src/main/java/org/dcsa/conformance/standards/ebl/action/UC6_Carrier_PublishDraftTransportDocumentAction.java
@@ -69,6 +69,9 @@ public void handlePartyInput(JsonNode partyInput) throws UserFacingException {
 
   @Override
   public JsonNode getJsonForHumanReadablePrompt() {
+    if (!skipSI) {
+      return null;
+    }
     return OBJECT_MAPPER.createObjectNode()
       .put("transportDocumentReference", "Insert TDR here");
   }
diff --git a/ebl/src/main/java/org/dcsa/conformance/standards/ebl/party/EblCarrier.java b/ebl/src/main/java/org/dcsa/conformance/standards/ebl/party/EblCarrier.java
index 2e3e46e4..ac726bb8 100644
--- a/ebl/src/main/java/org/dcsa/conformance/standards/ebl/party/EblCarrier.java
+++ b/ebl/src/main/java/org/dcsa/conformance/standards/ebl/party/EblCarrier.java
@@ -6,6 +6,7 @@
 
 import com.fasterxml.jackson.databind.JsonNode;
 import com.fasterxml.jackson.databind.node.ObjectNode;
+import java.net.URI;
 import java.time.Instant;
 import java.util.*;
 import java.util.function.Consumer;
@@ -13,6 +14,7 @@
 import lombok.SneakyThrows;
 import lombok.experimental.SuperBuilder;
 import lombok.extern.slf4j.Slf4j;
+import org.apache.commons.lang3.StringUtils;
 import org.dcsa.conformance.core.party.ConformanceParty;
 import org.dcsa.conformance.core.party.CounterpartConfiguration;
 import org.dcsa.conformance.core.party.PartyConfiguration;
@@ -199,10 +201,11 @@ private void supplyScenarioParameters(JsonNode actionPrompt) {
           "Fibreboard boxes"
         );
     };
+    var json = carrierScenarioParameters.toJson();
     asyncOrchestratorPostPartyInput(
-        actionPrompt.required("actionId").asText(), carrierScenarioParameters.toJson());
+        actionPrompt.required("actionId").asText(), json);
     addOperatorLogEntry(
-      "Provided CarrierScenarioParameters: %s".formatted(carrierScenarioParameters));
+      "Prompt answer for supplyScenarioParameters: %s".formatted(json.toString()));
   }
 
   private void requestUpdateToShippingInstructions(JsonNode actionPrompt) {
@@ -283,6 +286,10 @@ private void publishDraftTransportDocument(JsonNode actionPrompt) {
     si.publishDraftTransportDocument(documentReference, scenarioType);
     si.save(persistentMap);
     tdrToSir.put(si.getTransportDocumentReference(), si.getShippingInstructionsReference());
+    if (skipSI) {
+      var json = OBJECT_MAPPER.createObjectNode().put("transportDocumentReference", si.getTransportDocumentReference());
+      addOperatorLogEntry("Prompt answer for publishDraftTransportDocument: %s".formatted(json.toString()));
+    }
     generateAndEmitNotificationFromTransportDocument(actionPrompt, si, true);
 
     addOperatorLogEntry("Published draft transport document '%s'".formatted(si.getTransportDocumentReference()));
@@ -700,7 +707,7 @@ private ConformanceResponse _handlePostShippingInstructions(ConformanceRequest r
 
   @SneakyThrows
   private ConformanceResponse _handlePutShippingInstructions(ConformanceRequest request) {
-    var url = request.url();
+    var url = uriContextPath(request.url());
     var documentReference = lastUrlSegment(url);
     var sir = tdrToSir.getOrDefault(documentReference, documentReference);
     var siData = persistentMap.load(sir);
@@ -730,14 +737,19 @@ private ConformanceResponse _handlePutShippingInstructions(ConformanceRequest re
     );
   }
 
+  @SneakyThrows
+  private String uriContextPath(String uri) {
+    return StringUtils.stripEnd(new URI(uri).getPath(), "/");
+  }
+
   @Override
   public ConformanceResponse handleRequest(ConformanceRequest request) {
     log.info("Carrier.handleRequest(%s)".formatted(request));
+    var url = uriContextPath(request.url());
     try {
       var result =
         switch (request.method()) {
           case "GET" -> {
-            var url = request.url().replaceAll("/++$", "");
             var lastSegment = lastUrlSegment(url);
             var urlStem = url.substring(0, url.length() - lastSegment.length()).replaceAll("/++$", "");
             if (urlStem.endsWith("/v3/shipping-instructions")) {
@@ -749,14 +761,12 @@ public ConformanceResponse handleRequest(ConformanceRequest request) {
             yield return404(request);
           }
           case "POST" -> {
-            var url = request.url();
-            if (url.endsWith("/v3/shipping-instructions") || url.endsWith("/v3/shipping-instructions/")) {
+            if (url.endsWith("/v3/shipping-instructions")) {
               yield _handlePostShippingInstructions(request);
             }
             yield return404(request);
           }
           case "PATCH" -> {
-            var url = request.url().replaceAll("/++$", "");
             var lastSegment = lastUrlSegment(url);
             var urlStem = url.substring(0, url.length() - lastSegment.length()).replaceAll("/++$", "");
             if (urlStem.endsWith("/v3/shipping-instructions")) {
diff --git a/ebl/src/main/java/org/dcsa/conformance/standards/ebl/party/EblShipper.java b/ebl/src/main/java/org/dcsa/conformance/standards/ebl/party/EblShipper.java
index 64c918e3..573c7573 100644
--- a/ebl/src/main/java/org/dcsa/conformance/standards/ebl/party/EblShipper.java
+++ b/ebl/src/main/java/org/dcsa/conformance/standards/ebl/party/EblShipper.java
@@ -4,6 +4,9 @@
 
 import com.fasterxml.jackson.databind.JsonNode;
 import com.fasterxml.jackson.databind.node.ObjectNode;
+
+import java.net.URLEncoder;
+import java.nio.charset.StandardCharsets;
 import java.util.*;
 import java.util.function.Consumer;
 import lombok.extern.slf4j.Slf4j;
@@ -151,7 +154,9 @@ private ObjectNode sendUpdatedShippingInstructions(String sir, String documentRe
     var siWithoutStatus = si.deepCopy();
     siWithoutStatus.remove("shippingInstructionsStatus");
 
-    ConformanceResponse conformanceResponse = syncCounterpartPut("/v3/shipping-instructions/%s".formatted(documentReference), siWithoutStatus);
+    ConformanceResponse conformanceResponse = syncCounterpartPut("/v3/shipping-instructions/%s".formatted(
+      URLEncoder.encode(documentReference, StandardCharsets.UTF_8)
+    ), siWithoutStatus);
 
     JsonNode jsonBody = conformanceResponse.message().body().getJsonBody();
     String shippingInstructionsStatus = jsonBody.path("shippingInstructionsStatus").asText();
@@ -174,7 +179,7 @@ private void sendCancellationToUpdatedShippingInstructions(String documentRefere
       .put("updatedShippingInstructionsStatus", ShippingInstructionsStatus.SI_UPDATE_CANCELLED.wireName());
 
     syncCounterpartPatch(
-      "/v3/shipping-instructions/%s".formatted(documentReference),
+      "/v3/shipping-instructions/%s".formatted(URLEncoder.encode(documentReference, StandardCharsets.UTF_8)),
       Collections.emptyMap(),
       approvePayload);
 
@@ -209,7 +214,7 @@ private void sendApproveDraftTransportDocument(String documentReference) {
       .put("transportDocumentStatus", TransportDocumentStatus.TD_APPROVED.wireName());
 
     syncCounterpartPatch(
-      "/v3/transport-documents/%s".formatted(documentReference),
+      "/v3/transport-documents/%s".formatted(URLEncoder.encode(documentReference, StandardCharsets.UTF_8)),
       Collections.emptyMap(),
       approvePayload);
   }
@@ -234,7 +239,7 @@ private void getShippingInstructionsRequest(JsonNode actionPrompt) {
       ? Map.of("updatedContent", List.of("true"))
       : Collections.emptyMap();
 
-    syncCounterpartGet("/v3/shipping-instructions/" + documentReference, queryParams);
+    syncCounterpartGet("/v3/shipping-instructions/" + URLEncoder.encode(documentReference, StandardCharsets.UTF_8), queryParams);
 
     addOperatorLogEntry("Sent a GET request for shipping instructions with documentReference: %s".formatted(documentReference));
   }
@@ -243,7 +248,7 @@ private void getTransportDocument(JsonNode actionPrompt) {
     log.info("Shipper.getTransportDocument(%s)".formatted(actionPrompt.toPrettyString()));
     String tdr = actionPrompt.required("tdr").asText();
 
-    syncCounterpartGet("/v3/transport-documents/" + tdr, Collections.emptyMap());
+    syncCounterpartGet("/v3/transport-documents/" + URLEncoder.encode(tdr, StandardCharsets.UTF_8), Collections.emptyMap());
 
     addOperatorLogEntry("Sent a GET request for transport document with TDR: %s".formatted(tdr));
   }