diff --git a/Kitodo/src/main/java/org/kitodo/production/services/data/ProcessService.java b/Kitodo/src/main/java/org/kitodo/production/services/data/ProcessService.java
index 27808aa5712..3bd606fa88b 100644
--- a/Kitodo/src/main/java/org/kitodo/production/services/data/ProcessService.java
+++ b/Kitodo/src/main/java/org/kitodo/production/services/data/ProcessService.java
@@ -32,6 +32,7 @@
 import java.io.IOException;
 import java.io.InputStream;
 import java.io.OutputStream;
+import java.math.BigInteger;
 import java.net.URI;
 import java.net.URISyntaxException;
 import java.nio.charset.StandardCharsets;
@@ -655,7 +656,7 @@ public List<ProcessDTO> findByAnything(String searchQuery) throws DataException
                 ProcessTypeField.PROJECT_TITLE.getKey(),
                 ProcessTypeField.COMMENTS.getKey(),
                 ProcessTypeField.WIKI_FIELD.getKey(),
-                ProcessTypeField.TEMPLATE_TITLE.getKey()).operator(Operator.AND);
+                ProcessTypeField.TEMPLATE_TITLE.getKey()).operator(Operator.AND).lenient(true);
 
         if (searchQuery.matches("^\\d*$")) {
             multiMatchQueryForProcessFields.fields().put(ProcessTypeField.ID.getKey(), 1.0f);
@@ -812,7 +813,7 @@ public List<ProcessDTO> findLinkableParentProcesses(String searchInput, int proj
         BoolQueryBuilder processQuery = new BoolQueryBuilder()
                 .should(createSimpleWildcardQuery(ProcessTypeField.TITLE.getKey(), searchInput));
         if (searchInput.matches("\\d*")) {
-            processQuery.should(new MatchQueryBuilder(ProcessTypeField.ID.getKey(), searchInput));
+            processQuery.should(new MatchQueryBuilder(ProcessTypeField.ID.getKey(), searchInput).lenient(true));
         }
         BoolQueryBuilder query = new BoolQueryBuilder().must(processQuery)
                 .must(new MatchQueryBuilder(ProcessTypeField.PROJECT_ID.getKey(), projectId))
@@ -2126,6 +2127,8 @@ private Map<String, Object> iterateOverJsonObject(JSONObject xmlJSONObject) {
             Object value = xmlJSONObject.get(key);
             if (value instanceof String || value instanceof Integer) {
                 json.put(prepareKey(key), value);
+            } else if (value instanceof Long || value instanceof BigInteger) {
+                json.put(prepareKey(key), value.toString());
             } else if (value instanceof JSONObject) {
                 JSONObject jsonObject = (JSONObject) value;
                 Map<String, Object> map = iterateOverJsonObject(jsonObject);
diff --git a/Kitodo/src/test/java/org/kitodo/production/services/data/ProcessServiceIT.java b/Kitodo/src/test/java/org/kitodo/production/services/data/ProcessServiceIT.java
index 70567641158..51fb6c62c55 100644
--- a/Kitodo/src/test/java/org/kitodo/production/services/data/ProcessServiceIT.java
+++ b/Kitodo/src/test/java/org/kitodo/production/services/data/ProcessServiceIT.java
@@ -239,6 +239,19 @@ public void shouldFindByMetadataContent() throws DataException, DAOException, IO
         ProcessTestUtils.removeTestProcess(testProcessId);
     }
 
+    @Test
+    public void shouldFindByLongNumberInMetadata() throws DataException, DAOException, IOException {
+        int processId = MockDatabase.insertTestProcess("Test process", 1, 1, 1);
+        ProcessTestUtils.copyTestMetadataFile(processId, ProcessTestUtils.testFileForLongNumbers);
+        assertEquals(processNotFound, 1, processService
+                .findByMetadata(Collections.singletonMap("CatalogIDDigital", "999999999999999991")).size());
+        assertEquals(processNotFound, 1, processService
+                .findByMetadata(Collections.singletonMap("CatalogIDDigital", "991022551489706476")).size());
+        assertEquals(processNotFound, 1, processService
+                .findByMetadata(Collections.singletonMap("CatalogIDDigital", "999999999999999999999999991")).size());
+        ProcessTestUtils.removeTestProcess(processId);
+    }
+
     @Test
     public void shouldFindProcessWithUnderscore() throws DataException, DAOException {
         Project project = ServiceManager.getProjectService().getById(1);
diff --git a/Kitodo/src/test/java/org/kitodo/test/utils/ProcessTestUtils.java b/Kitodo/src/test/java/org/kitodo/test/utils/ProcessTestUtils.java
index b92b6b8c07b..fd472582570 100644
--- a/Kitodo/src/test/java/org/kitodo/test/utils/ProcessTestUtils.java
+++ b/Kitodo/src/test/java/org/kitodo/test/utils/ProcessTestUtils.java
@@ -52,6 +52,7 @@ public class ProcessTestUtils {
     private static final int TEST_TEMPLATE_ID = 1;
     private static final String ID_PLACEHOLDER = "IDENTIFIER_PLACEHOLDER";
     public static final String testFileForHierarchyParent = "multivalued_metadata.xml";
+    public static final String testFileForLongNumbers = "testMetadataWithLongNumbers.xml";
     public static final String testFileChildProcessToKeep = "testMetadataForChildProcessToKeep.xml";
     private static final String testFileChildProcessToRemove = "testMetadataForKitodoScript.xml";
     private static final Map<String, String> hierarchyProcessTitlesAndFiles;
diff --git a/Kitodo/src/test/resources/metadata/metadataFiles/testMetadataWithLongNumbers.xml b/Kitodo/src/test/resources/metadata/metadataFiles/testMetadataWithLongNumbers.xml
new file mode 100644
index 00000000000..045a27689db
--- /dev/null
+++ b/Kitodo/src/test/resources/metadata/metadataFiles/testMetadataWithLongNumbers.xml
@@ -0,0 +1,43 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<mets:mets
+        xsi:schemaLocation="info:lc/xmlns/premis-v2 http://www.loc.gov/standards/premis/v2/premis-v2-0.xsd http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/mods.xsd http://www.loc.gov/METS/ http://www.loc.gov/standards/mets/mets.xsd http://www.loc.gov/mix/v10 http://www.loc.gov/standards/mix/mix10/mix10.xsd"
+        xmlns:mets="http://www.loc.gov/METS/" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
+    <mets:metsHdr CREATEDATE="2018-09-14T07:45:17">
+        <mets:agent OTHERTYPE="SOFTWARE" ROLE="CREATOR" TYPE="OTHER">
+            <mets:name>Kitodo - kitodo-ugh-3.0-SNAPSHOT - 18-April-2018 13:20:13</mets:name>
+            <mets:note>Kitodo</mets:note>
+        </mets:agent>
+    </mets:metsHdr>
+    <mets:dmdSec ID="DMDLOG_0000">
+        <mets:mdWrap MDTYPE="MODS">
+            <mets:xmlData>
+                <kitodo:kitodo xmlns:kitodo="http://meta.kitodo.org/v1/">
+                    <kitodo:metadata name="TitleDocMain">Second process</kitodo:metadata>
+                    <kitodo:metadata name="TitleDocMainShort">Second</kitodo:metadata>
+                    <kitodo:metadata name="TSL_ATS">Proc</kitodo:metadata>
+                    <kitodo:metadata name="CatalogIDDigital">999999999999999991</kitodo:metadata>
+                    <kitodo:metadata name="CatalogIDDigital">991022551489706476</kitodo:metadata>
+                    <kitodo:metadata name="CatalogIDDigital">999999999999999999999999991</kitodo:metadata>
+                </kitodo:kitodo>
+            </mets:xmlData>
+        </mets:mdWrap>
+    </mets:dmdSec>
+    <mets:dmdSec ID="DMDPHYS_0000">
+        <mets:mdWrap MDTYPE="MODS">
+            <mets:xmlData>
+                <kitodo:kitodo xmlns:kitodo="http://meta.kitodo.org/v1/">
+                    <kitodo:metadata name="pathimagefiles">file:/2/images/Sec_Proc_tif</kitodo:metadata>
+                </kitodo:kitodo>
+            </mets:xmlData>
+        </mets:mdWrap>
+    </mets:dmdSec>
+    <mets:structMap TYPE="LOGICAL">
+        <mets:div DMDID="DMDLOG_0000" ID="LOG_0000" TYPE="Monograph"/>
+    </mets:structMap>
+    <mets:structMap TYPE="PHYSICAL">
+        <mets:div DMDID="DMDPHYS_0000" ID="PHYS_0000" TYPE="physSequence"/>
+    </mets:structMap>
+    <mets:structLink>
+        <mets:smLink xlink:to="PHYS_0000" xlink:from="LOG_0000" xmlns:xlink="http://www.w3.org/1999/xlink"/>
+    </mets:structLink>
+</mets:mets>