diff --git a/tests/k6/tests/serviceowner/all-tests.js b/tests/k6/tests/serviceowner/all-tests.js
index 86dee427f..0f052a4f4 100644
--- a/tests/k6/tests/serviceowner/all-tests.js
+++ b/tests/k6/tests/serviceowner/all-tests.js
@@ -8,6 +8,7 @@ import { default as dialogCreateInvalidActionCount } from './dialogCreateInvalid
 import { default as dialogCreateInvalidProcess } from './dialogCreateInvalidProcess.js';
 import { default as dialogCreatePatchDelete } from './dialogCreatePatchDelete.js';
 import { default as dialogCreateUpdatePatchDeleteCorrespondenceResource } from './dialogCreateUpdatePatchDeleteCorrespondenceResource.js';
+import { default as dialogDetails } from './dialogDetails.js';
 import { default as dialogSearch } from './dialogSearch.js';
 import { default as dialogUpdateActivity } from './dialogUpdateActivity.js';
 
@@ -21,6 +22,7 @@ export default function() {
   dialogCreateInvalidProcess();
   dialogCreatePatchDelete();
   dialogCreateUpdatePatchDeleteCorrespondenceResource();
+  dialogDetails();
   dialogSearch();
   dialogUpdateActivity();
 }
diff --git a/tests/k6/tests/serviceowner/dialogDetails.js b/tests/k6/tests/serviceowner/dialogDetails.js
new file mode 100644
index 000000000..622a1a3c7
--- /dev/null
+++ b/tests/k6/tests/serviceowner/dialogDetails.js
@@ -0,0 +1,36 @@
+import {
+    describe,
+    expect,
+    expectStatusFor,
+    getSO,
+    postSO
+} from '../../common/testimports.js'
+import {default as dialogToInsert} from './testdata/01-create-dialog.js';
+import { getDefaultEnduserSsn } from "../../common/token.js";
+
+export default function () {
+
+    let dialogId = null;
+    let endUserId = "urn:altinn:person:identifier-no:" + getDefaultEnduserSsn();
+    let invalidEndUserId = "urn:altinn:person:identifier-no:08895699684";
+
+    describe('Perform dialog create', () => {
+        let r = postSO('dialogs', dialogToInsert());
+        expectStatusFor(r).to.equal(201);
+        expect(r, 'response').to.have.validJsonBody();
+
+        dialogId = r.json();
+    });
+
+    describe('Perform dialog get with endUserId', () => {
+        let r = getSO('dialogs/' + dialogId + '?endUserId=' + endUserId);
+        expectStatusFor(r).to.equal(200);
+        expect(r, 'response').to.have.validJsonBody();
+        expect(r.json(), 'dialog').to.have.property("id").to.equal(dialogId);
+    });
+
+    describe('Perform dialog get with invalid endUserId', () => {
+        let r = getSO('dialogs/' + dialogId + '?endUserId=' + invalidEndUserId);
+        expectStatusFor(r).to.equal(404);
+    });
+}
diff --git a/tests/k6/tests/serviceowner/dialogSearch.js b/tests/k6/tests/serviceowner/dialogSearch.js
index d619bdac6..73233d71c 100644
--- a/tests/k6/tests/serviceowner/dialogSearch.js
+++ b/tests/k6/tests/serviceowner/dialogSearch.js
@@ -21,7 +21,7 @@ import {
 
 import { default as dialogToInsert } from './testdata/01-create-dialog.js';
 
-import { getDefaultEnduserOrgNo } from "../../common/token.js";
+import { getDefaultEnduserOrgNo, getDefaultEnduserSsn } from "../../common/token.js";
 
 export default function () {
 
@@ -37,6 +37,7 @@ export default function () {
     let senderNameToSearchFor = uuidv4()
     let auxParty = "urn:altinn:organization:identifier-no:" + getDefaultEnduserOrgNo();
     let auxResource = "urn:altinn:resource:ttd-dialogporten-automated-tests-2"; // This must exist in Resource Registry
+    let endUserId = "urn:altinn:person:identifier-no:" + getDefaultEnduserSsn();
     let titleForDueAtItem = uuidv4();
     let titleForExpiresAtItem = uuidv4();
     let titleForVisibleFromItem = uuidv4();
@@ -191,6 +192,23 @@ export default function () {
         expect(r.json(), 'response json').to.have.property("items").with.lengthOf(1);
         expect(r.json().items[0], 'process').to.have.property("process").that.equals(processToSeachFor);
     })
+
+    describe('List with enduserid', () => {
+        let r = getSO('dialogs/?CreatedAfter=' + createdAfter + '&EndUserId=' + endUserId + '&ServiceResource=' + auxResource);    
+        expectStatusFor(r).to.equal(200);
+        expect(r, 'response').to.have.validJsonBody();
+        expect(r.json(), 'response json').to.have.property("items").with.lengthOf(1);
+        expect(r.json().items[0], 'party').to.have.property("serviceResource").that.equals(auxResource);
+    })
+
+    describe('List with invalid enduserid', () => {
+        let invalidEndUserId = "urn:altinn:person:identifier-no:08895699684";
+        let r = getSO('dialogs/?CreatedAfter=' + createdAfter + '&EndUserId=' + invalidEndUserId + '&ServiceResource=' + auxResource);    
+        expectStatusFor(r).to.equal(200);
+        expect(r, 'response').to.have.validJsonBody();
+        expect(r.json(), 'response json').not.to.have.property("items");
+    })
+    
     describe("Cleanup", () => {
         dialogIds.forEach((d) => {
             let r = purgeSO("dialogs/" + d);