diff --git a/osm/src/test/groovy/org/orbisgis/geoclimate/osm/WorflowOSMTest.groovy b/osm/src/test/groovy/org/orbisgis/geoclimate/osm/WorflowOSMTest.groovy
index a4f1ef2f93..ab372c5387 100644
--- a/osm/src/test/groovy/org/orbisgis/geoclimate/osm/WorflowOSMTest.groovy
+++ b/osm/src/test/groovy/org/orbisgis/geoclimate/osm/WorflowOSMTest.groovy
@@ -303,6 +303,7 @@ class WorflowOSMTest extends WorkflowAbstractTest {
                 "output"      : [
                         "folder": directory]
         ]
+        println(osm_parmeters)
         OSM.WorkflowOSM.workflow(osm_parmeters)
         def folder = new File(directory + File.separator + "osm_" + bbox.join("_"))
         def resultFiles = []
diff --git a/worldpoptools/pom.xml b/worldpoptools/pom.xml
index 2667f0d2e3..44a29160b5 100644
--- a/worldpoptools/pom.xml
+++ b/worldpoptools/pom.xml
@@ -23,6 +23,11 @@
             <artifactId>groovy</artifactId>
             <version>${groovy-version}</version>
         </dependency>
+        <dependency>
+            <groupId>org.codehaus.groovy</groupId>
+            <artifactId>groovy-xml</artifactId>
+            <version>${groovy-version}</version>
+        </dependency>
         <dependency>
             <groupId>org.orbisgis.data</groupId>
             <artifactId>h2gis</artifactId>
diff --git a/worldpoptools/src/main/groovy/org/orbisgis/geoclimate/worldpoptools/WorldPopExtract.groovy b/worldpoptools/src/main/groovy/org/orbisgis/geoclimate/worldpoptools/WorldPopExtract.groovy
index b1894321b0..ba59f001f0 100644
--- a/worldpoptools/src/main/groovy/org/orbisgis/geoclimate/worldpoptools/WorldPopExtract.groovy
+++ b/worldpoptools/src/main/groovy/org/orbisgis/geoclimate/worldpoptools/WorldPopExtract.groovy
@@ -20,6 +20,8 @@
 package org.orbisgis.geoclimate.worldpoptools
 
 import groovy.transform.BaseScript
+import groovy.xml.XmlSlurper
+import groovy.xml.slurpersupport.GPathResult
 import org.cts.util.UTMUtils
 import org.h2gis.api.EmptyProgressVisitor
 import org.h2gis.functions.io.asc.AscReaderDriver
@@ -63,10 +65,10 @@ String extractWorldPopLayer(String coverageId, List bbox) {
     } else {
         if (outputGridFile.createNewFile()) {
             if (grid(gridRequest, outputGridFile)) {
-                info "The OSM file has been downloaded at ${popGridFilePath}."
+                info "The WorldPop file has been downloaded at ${popGridFilePath}."
             } else {
                 outputGridFile.delete()
-                error "Cannot extract the OSM data for the query $gridRequest"
+                error "Cannot extract the WorldPop file for the query $gridRequest"
                 return
             }
         }
@@ -225,6 +227,46 @@ boolean grid(String wcsRequest, File outputGridFile) {
     }
 }
 
+/**
+ * A method to test if the coverageId is available
+ * @param coverageId
+ * @return
+ */
+boolean isCoverageAvailable(String coverageId){
+    String describeRequest = """https://ogc.worldpop.org/geoserver/ows?service=WCS&version=2.0.1&request=DescribeCoverage&coverageId=$coverageId""".toString()
+    def queryUrl = new URL(describeRequest)
+    final String proxyHost = System.getProperty("http.proxyHost");
+    final int proxyPort = Integer.parseInt(System.getProperty("http.proxyPort", "80"));
+    def connection
+    if (proxyHost != null) {
+        def proxy = new Proxy(Proxy.Type.HTTP, new InetSocketAddress(proxyHost, proxyPort));
+        connection = queryUrl.openConnection(proxy) as HttpURLConnection
+    } else {
+        connection = queryUrl.openConnection() as HttpURLConnection
+    }
+    info queryUrl.toString()
+    connection.connect()
+
+    info "Executing query... $queryUrl"
+    //Save the result in a file
+    if (connection.responseCode == 200) {
+            XmlSlurper xmlParser = new XmlSlurper()
+        GPathResult nodes = xmlParser.parse(connection.inputStream)
+        if(nodes.Exception){
+            return true
+        }else {
+            error "The service is not available for the coverageId : $coverageId"
+            return false
+        }
+    } else if (connection.responseCode == 404) {
+        error "The service is not available for the coverageId : $coverageId"
+        return false
+    } else {
+        error "Cannot request the WorldPop service"
+        return false
+    }
+}
+
 /**
  * This method is used to build the subset filter used by the WCS request
  * from bbox defined by a set of latitude and longitude coordinates
diff --git a/worldpoptools/src/test/groovy/org/orbisgis/geoclimate/worldpoptools/WorldPopExtractTest.groovy b/worldpoptools/src/test/groovy/org/orbisgis/geoclimate/worldpoptools/WorldPopExtractTest.groovy
index 355d8e7c3b..ce2567403e 100644
--- a/worldpoptools/src/test/groovy/org/orbisgis/geoclimate/worldpoptools/WorldPopExtractTest.groovy
+++ b/worldpoptools/src/test/groovy/org/orbisgis/geoclimate/worldpoptools/WorldPopExtractTest.groovy
@@ -78,9 +78,11 @@ class WorldPopExtractTest {
      */
     @Test
     void extractGridProcess() {
-        String outputFilePath = WorldPopTools.Extract.extractWorldPopLayer("wpGlobal:ppp_2018", [47.63324, -2.78087, 47.65749, -2.75979])
-        assertNotNull(outputFilePath)
-        assertTrue new File(outputFilePath).exists()
+        if(WorldPopExtract.Extract.isCoverageAvailable("wpGlobal:ppp_2018")) {
+            String outputFilePath = WorldPopTools.Extract.extractWorldPopLayer("wpGlobal:ppp_2018", [47.63324, -2.78087, 47.65749, -2.75979])
+            assertNotNull(outputFilePath)
+            assertTrue new File(outputFilePath).exists()
+        }
     }
 
     /**
@@ -88,13 +90,24 @@ class WorldPopExtractTest {
      */
     @Test
     void extractLoadGridProcess() {
-        String outputFilePath = WorldPopTools.Extract.extractWorldPopLayer("wpGlobal:ppp_2018", [47.63324, -2.78087, 47.65749, -2.75979])
-        if (outputFilePath) {
-            assertTrue new File(outputFilePath).exists()
-            String outputTableWorldPopName = WorldPopTools.Extract.importAscGrid(h2GIS, outputFilePath)
-            assertNotNull outputTableWorldPopName
-            assertEquals(720, h2GIS.getSpatialTable(outputTableWorldPopName).rowCount)
-            assertEquals(["ID_POP", "THE_GEOM", "POP"], h2GIS.getTable(outputTableWorldPopName).columns)
+        if(WorldPopExtract.Extract.isCoverageAvailable("wpGlobal:ppp_2018")) {
+            String outputFilePath = WorldPopTools.Extract.extractWorldPopLayer("wpGlobal:ppp_2018", [47.63324, -2.78087, 47.65749, -2.75979])
+            if (outputFilePath) {
+                assertTrue new File(outputFilePath).exists()
+                String outputTableWorldPopName = WorldPopTools.Extract.importAscGrid(h2GIS, outputFilePath)
+                assertNotNull outputTableWorldPopName
+                assertEquals(720, h2GIS.getSpatialTable(outputTableWorldPopName).rowCount)
+                assertEquals(["ID_POP", "THE_GEOM", "POP"], h2GIS.getTable(outputTableWorldPopName).columns)
+            }
         }
     }
+
+    /**
+     * Test to extract a grid from process
+     */
+    @Test
+    void testCoverageAvailable() {
+        assertFalse(WorldPopExtract.Extract.isCoverageAvailable("wpGlobal:ppp_2050"))
+        assertTrue(WorldPopExtract.Extract.isCoverageAvailable("wpGlobal:ppp_2018"))
+    }
 }