diff --git a/build.gradle b/build.gradle
index 6668f96..520201d 100644
--- a/build.gradle
+++ b/build.gradle
@@ -1,5 +1,5 @@
 plugins {
-    id 'org.springframework.boot' version '2.6.5'
+    id 'org.springframework.boot' version '2.6.6'
     id 'io.spring.dependency-management' version '1.0.11.RELEASE'
     id 'java'
 }
diff --git a/gradle/wrapper/gradle-wrapper.properties b/gradle/wrapper/gradle-wrapper.properties
index 00e33ed..aa991fc 100644
--- a/gradle/wrapper/gradle-wrapper.properties
+++ b/gradle/wrapper/gradle-wrapper.properties
@@ -1,5 +1,5 @@
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-7.4.1-bin.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-7.4.2-bin.zip
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
diff --git a/installAndRun.sh b/installAndRun.sh
index 3cf6fc1..fcb2e2b 100755
--- a/installAndRun.sh
+++ b/installAndRun.sh
@@ -17,7 +17,7 @@ if [[ justInstall -eq 1 && shouldRunInDocker -eq 1 ]]; then
   justInstall=0
 fi
 
-gradleVersion="7.4.1"
+gradleVersion="7.4.2"
 
 if [[ justInstall -eq 0 ]]; then
 
diff --git a/src/main/java/eu/openaire/urls_controller/models/Payload.java b/src/main/java/eu/openaire/urls_controller/models/Payload.java
index f87aa84..82560c1 100644
--- a/src/main/java/eu/openaire/urls_controller/models/Payload.java
+++ b/src/main/java/eu/openaire/urls_controller/models/Payload.java
@@ -17,7 +17,8 @@ import java.sql.Timestamp;
         "size",
         "hash",
         "location",
-        "provenance"
+        "provenance",
+        "datasourceId"
 })
 public class Payload {
 
@@ -48,9 +49,13 @@ public class Payload {
     @JsonProperty("provenance")
     private String provenance;  // "crawl:<PluginName>"
 
+    @JsonProperty("provenance")
+    private String datasourceId;  // "crawl:<PluginName>"
+
+
     public Payload() {}
 
-    public Payload(String id, String original_url, String actual_url, Timestamp timestamp_acquired, String mime_type, Long size, String hash, String location, String provenance) {
+    public Payload(String id, String original_url, String actual_url, Timestamp timestamp_acquired, String mime_type, Long size, String hash, String location, String provenance, String datasourceId) {
         this.id = id;
         this.original_url = original_url;
         this.actual_url = actual_url;
@@ -60,6 +65,7 @@ public class Payload {
         this.hash = hash;
         this.location = location;
         this.provenance = provenance;
+        this.datasourceId = datasourceId;
     }
 
     public String getId() {
@@ -134,18 +140,29 @@ public class Payload {
         this.provenance = provenance;
     }
 
+    public String getDatasourceId() {
+        return datasourceId;
+    }
+
+    public void setDatasourceId(String datasourceId) {
+        this.datasourceId = datasourceId;
+    }
+
+
     @Override
     public String toString() {
         return "Payload{" +
                 "id='" + id + '\'' +
                 ", original_url='" + original_url + '\'' +
                 ", actual_url='" + actual_url + '\'' +
-                ", timestamp_acquired='" + timestamp_acquired + '\'' +
+                ", timestamp_acquired=" + timestamp_acquired +
                 ", mime_type='" + mime_type + '\'' +
-                ", size='" + size + '\'' +
-                ", md5='" + hash + '\'' +
+                ", size=" + size +
+                ", hash='" + hash + '\'' +
                 ", location='" + location + '\'' +
                 ", provenance='" + provenance + '\'' +
+                ", datasourceId='" + datasourceId + '\'' +
                 '}';
     }
+
 }
diff --git a/src/main/java/eu/openaire/urls_controller/util/FileUtils.java b/src/main/java/eu/openaire/urls_controller/util/FileUtils.java
index b1113d0..9883533 100644
--- a/src/main/java/eu/openaire/urls_controller/util/FileUtils.java
+++ b/src/main/java/eu/openaire/urls_controller/util/FileUtils.java
@@ -90,7 +90,13 @@ public class FileUtils {
     @Value("services.pdfaggregation.controller.baseTargetLocation")
     private String baseTargetLocation;
     public static DecimalFormat df = new DecimalFormat("0.00");
-    private final Pattern FILENAME_WITH_EXTENSION = Pattern.compile(".*/([\\w_:()]+\\.[\\w]{2,10})$");
+    private static final Pattern FILENAME_WITH_EXTENSION = Pattern.compile(".*/([\\w_:()]+\\.[\\w]{2,10})$");
+
+    // The following regex might be usefull in a future scenario. It extracts the "plain-filename" and "file-ID" and the "file-extension". It may even be merged with the above regex.
+    // Possible full-filenames are: "ID.pdf", "ID(12).pdf"
+    //private static final Pattern FILENAME_ID_EXTENSION = Pattern.compile("(([^.()]+)[^.]*)(\.[\w]{2,10})$");
+
+
     private final int numOfFullTextsPerBatch = 70;   // The HTTP-headers cannot be too large (It failed with 100 fileNames).
 
     public UploadFullTextsResponse getAndUploadFullTexts(List<UrlReport> urlReports, HttpServletRequest request, long assignmentsBatchCounter, String workerId) {
@@ -243,6 +249,15 @@ public class FileUtils {
 
                     // Let's try to upload the file to S3 and update the payloads, either in successful file-uploads (right-away) or not (in the end).
                     try {
+                        // Prepare the filename as: "datasourceid/publicationid(123)::hash.pdf"
+                        // All related payloads point to this exact same file and have the same datasourceId.
+                        Payload firstRelatedPayload = fileRelatedPayloads.stream().findFirst().get();
+                        String datasourceId = firstRelatedPayload.getDatasourceId();
+                        String hash = firstRelatedPayload.getHash();
+
+                        String[] fileNameData = fileName.split("\\.");
+                        fileName = datasourceId + "/" + fileNameData[0] + "::" + hash + "." + fileNameData[1];
+
                         String s3Url = s3ObjectStore.uploadToS3(fileName, fileFullPath);
                         setFullTextForMultiplePayloads(fileRelatedPayloads, s3Url);
                         numUploadedFiles ++;