Send/Cancel Meeting Request and Generate iCalendar

RE: Send/Cancel Meeting Request and Generate iCalendar

raonitika — Mon, 05 Jan 2026 11:04:41 GMT

I am using iCal Plugin 6.0.0 in OnPremise Appian environment, to send an invite to Outlook.

The node gets completed successfully in the PM and even a meeting uId is generated. However, meeting invite is not received in recipients' inbox(this recipient is able to receive normal emails from the same environment).

On further investigating the tomcat logs, it looks like an issue with smtp/server errors, which is not able to send the invite.

Please share thoughts/suggestions.

Thanks in advance.

Nitika

RE: Send/Cancel Meeting Request and Generate iCalendar

Appian AppMarket — Mon, 25 Aug 2025 22:00:01 GMT

v6.0.0 Release Notes

Changes for TLS and Jakarta libraries

RE: Send/Cancel Meeting Request and Generate iCalendar

anthonyc3378 — Wed, 11 Jun 2025 17:30:07 GMT

Hello,

Following the 25.2 upgrade, the plugin smart services are failing with a generic Unexpected error. (APNX-1-8000-000) message. The tomcat logs do not provide any further context on what is preventing iCals from being sent/updated/cancelled.

RE: Send/Cancel Meeting Request and Generate iCalendar

Daniel Abbehusen — Wed, 03 Jul 2024 12:43:33 GMT

Hello all,

I'm trying to use the plugin but it's not sending the email. The process runs correctly, but no email arrives in the mailbox. I tried to look at the logs, as some mentioned above, but no error log came up. I searched if there was an error in the tomcat-stdOut.log directory but I couldn't find it. I'm using version 24.2

RE: Send/Cancel Meeting Request and Generate iCalendar

yogeshc213832 — Mon, 03 Jul 2023 08:37:44 GMT

Hello all

I am using the "Send meeting request" Smart service in the process model.

The smart service was properly executed without any error but I am not getting any meeting email or Invite.

In the System logs, I am getting the below exception.

ERROR com.appiancorp.ical.Mail - Could not send mail via us-east-1.smtp-gateway.appian-customer.com:587 to com.sun.mail.smtp.SMTPSendFailedException: 530 5.7.0 Must issue a STARTTLS command first

RE: Send/Cancel Meeting Request and Generate iCalendar

saimohancharugundla — Thu, 01 Jun 2023 13:31:14 GMT

Hi, iCal string and meeting uuid has been generated. But how can we integrate that event with outlook . Can anyone elaborate the use case of this plugin ?

RE: Send/Cancel Meeting Request and Generate iCalendar

irenec7625 — Wed, 29 Mar 2023 07:44:58 GMT

Hi everyone,

I am facing an issue with this smart service. It doesn't work. In the process model monitoring, the node is completed, but it doesn't send any meeting.

Can anyone help me?
Thanks

RE: Send/Cancel Meeting Request and Generate iCalendar

Trupti Pargaonkar — Tue, 01 Nov 2022 07:04:10 GMT

Hi,

I am facing an issue with "Send Meeting Request" smart service in our UAT environment. It is working fine with same configurations in lower environments. The error in system log is as below -

2022-11-01 05:11:39,743 [ThreadPoolTaskExecutor-253084] ERROR com.appiancorp.process.workpoller.WorkItemListener - The following exception occurred while attempting to complete work item [[WorkId: 845, EngineId: execution00, Request: UnattendedJavaActivityRequest:49251 as 43161959 by 43161959, ProcessId: 806362, ProcessModelId: 18226, Response: null]] - Exception: 
javax.resource.spi.work.WorkCompletedException: java.lang.NoClassDefFoundError: jakarta/mail/internet/InternetAddress
	at org.springframework.jca.work.SimpleTaskWorkManager$DelegatingWorkAdapter.run(SimpleTaskWorkManager.java:247)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
	at java.lang.Thread.run(Thread.java:750)
Caused by: java.lang.NoClassDefFoundError: jakarta/mail/internet/InternetAddress
	at com.appiancorp.ical.SendMeetingRequestActivity_v4.run(SendMeetingRequestActivity_v4.java:81)
	at com.appiancorp.process.runtime.framework.DefaultActivityExecutor$1.lambda$call$0(DefaultActivityExecutor.java:136)
	at com.appiancorp.plugins.PluginUsageLogger.runWithPluginInformation(PluginUsageLogger.java:52)
	at com.appiancorp.process.runtime.framework.DefaultActivityExecutor$1.call(DefaultActivityExecutor.java:136)
	at com.appiancorp.process.runtime.framework.DefaultActivityExecutor$1.call(DefaultActivityExecutor.java:130)
	at com.appiancorp.common.ContextClassLoaderSwitcher.runInContext(ContextClassLoaderSwitcher.java:27)
	at com.appiancorp.process.runtime.framework.DefaultActivityExecutor.execute(DefaultActivityExecutor.java:130)
	at com.appiancorp.process.engine.UnattendedJavaActivityRequest.execute(UnattendedJavaActivityRequest.java:88)
	at com.appiancorp.process.engine.UnattendedJavaActivityRequestResponseCreator.getJavaActivityResultResponse(UnattendedJavaActivityRequestResponseCreator.java:21)
	at com.appiancorp.process.engine.UnattendedJavaActivityRequest.getJavaActivityResultResponse(UnattendedJavaActivityRequest.java:67)
	at com.appiancorp.process.engine.UnattendedJavaActivityRequest.execute0(UnattendedJavaActivityRequest.java:55)
	at com.appiancorp.common.persistence.data.AppianDataUserContextProvider.executeWithConsistentDataReads(AppianDataUserContextProvider.java:143)
	at com.appiancorp.process.engine.ProcessContinuationRequest.executeOuter(ProcessContinuationRequest.java:68)
	at com.appiancorp.process.engine.ContinuationRequest.execute(ContinuationRequest.java:129)
	at com.appiancorp.process.workpoller.UnattendedRequestHandlerBean.onMessage(UnattendedRequestHandlerBean.java:36)
	at com.appiancorp.process.workpoller.WorkItem.run(WorkItem.java:110)
	at org.springframework.jca.work.SimpleTaskWorkManager$DelegatingWorkAdapter.run(SimpleTaskWorkManager.java:239)
	... 3 more
Exception in thread "ThreadPoolTaskExecutor-253084" java.lang.NoClassDefFoundError: jakarta/mail/internet/InternetAddress
	at com.appiancorp.ical.SendMeetingRequestActivity_v4.run(SendMeetingRequestActivity_v4.java:81)
	at com.appiancorp.process.runtime.framework.DefaultActivityExecutor$1.lambda$call$0(DefaultActivityExecutor.java:136)
	at com.appiancorp.plugins.PluginUsageLogger.runWithPluginInformation(PluginUsageLogger.java:52)
	at com.appiancorp.process.runtime.framework.DefaultActivityExecutor$1.call(DefaultActivityExecutor.java:136)
	at com.appiancorp.process.runtime.framework.DefaultActivityExecutor$1.call(DefaultActivityExecutor.java:130)
	at com.appiancorp.common.ContextClassLoaderSwitcher.runInContext(ContextClassLoaderSwitcher.java:27)
	at com.appiancorp.process.runtime.framework.DefaultActivityExecutor.execute(DefaultActivityExecutor.java:130)
	at com.appiancorp.process.engine.UnattendedJavaActivityRequest.execute(UnattendedJavaActivityRequest.java:88)
	at com.appiancorp.process.engine.UnattendedJavaActivityRequestResponseCreator.getJavaActivityResultResponse(UnattendedJavaActivityRequestResponseCreator.java:21)
	at com.appiancorp.process.engine.UnattendedJavaActivityRequest.getJavaActivityResultResponse(UnattendedJavaActivityRequest.java:67)
	at com.appiancorp.process.engine.UnattendedJavaActivityRequest.execute0(UnattendedJavaActivityRequest.java:55)
	at com.appiancorp.common.persistence.data.AppianDataUserContextProvider.executeWithConsistentDataReads(AppianDataUserContextProvider.java:143)
	at com.appiancorp.process.engine.ProcessContinuationRequest.executeOuter(ProcessContinuationRequest.java:68)
	at com.appiancorp.process.engine.ContinuationRequest.execute(ContinuationRequest.java:129)
	at com.appiancorp.process.workpoller.UnattendedRequestHandlerBean.onMessage(UnattendedRequestHandlerBean.java:36)
	at com.appiancorp.process.workpoller.WorkItem.run(WorkItem.java:110)
	at org.springframework.jca.work.SimpleTaskWorkManager$DelegatingWorkAdapter.run(SimpleTaskWorkManager.java:239)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
	at java.lang.Thread.run(Thread.java:750)
2022-11-01 05:11:40,244 [Appian Work Item - 498598 - WorkID 846 - execution00 : SendNotificationRequest] WARN  com.appiancorp.ap2.service.PortalNotificationServiceJavaImpl - A notification broadcast has been prevented because the number of recipients [165] would exceed the configured limit of [100]. Adjust conf.notifications.MAX_RECIPIENTS to a value greater than [100] as necessary for future notifications.

Any solution available ?

RE: Send/Cancel Meeting Request and Generate iCalendar

Gabriele Minardi — Mon, 24 Oct 2022 12:44:17 GMT

Hi,

we are testing the plugin on Appian Community Edition 22.3 and we are facing a similar issue as Simone, the log reports:

ERROR com.appiancorp.ical.Mail - Could not send mail via eu-central-1.smtp-gateway.appian-customer.com:587 to 
com.sun.mail.smtp.SMTPSendFailedException: 530 5.7.0 Must issue a STARTTLS command first

Is there a solution?

RE: Send/Cancel Meeting Request and Generate iCalendar

rohithchebolu — Mon, 10 Oct 2022 05:13:07 GMT

While executing the plugin in Appian, the Process instance was completed but the plugin is not getting initiated . I think a java library is missing and waiting for you to update. Kindly accept my request and look for the update

RE: Send/Cancel Meeting Request and Generate iCalendar

Appian AppMarket — Fri, 23 Sep 2022 14:35:21 GMT

Release Notes - v5.0.0

Updated to support the jakarta mail library introduced in Appian 22.3

RE: Send/Cancel Meeting Request and Generate iCalendar

katherinef — Tue, 13 Sep 2022 17:26:15 GMT

Will this plug-in be affected by Appian's transition to Jakarta Mail from Java Mail?

RE: Send/Cancel Meeting Request and Generate iCalendar

daliar0002 — Tue, 06 Sep 2022 12:13:17 GMT

Hello,

I am trying to attach a PDF document using Send Meeting Request Smart service
the meeting request is sent but without the pdf document !!

can any one help me ?

the pdf document is exist in my application.

RE: Send/Cancel Meeting Request and Generate iCalendar

christianr0008 — Fri, 02 Sep 2022 14:14:37 GMT

Hello there,

We are currently facing an issue with the Generate iCalendar Smart Service. When it is executed, we get an error saying "An error occurred in executing an Activity Class." We are running Appian on Cloud and use version 22.3

Our Tomcat Log says the following:

2022-09-02 12:51:37,729 [ThreadPoolTaskExecutor-9438] ERROR com.appiancorp.process.workpoller.WorkItemListener - The following exception occurred while attempting to complete work item [[WorkId: 11, EngineId: execution01, Request: UnattendedJavaActivityRequest:268436103 as christian.michael.ritter@pwc.com by christian.michael.ritter@pwc.com, ProcessId: 268440647, ProcessModelId: 2990, Response: null]] - Exception: 
javax.resource.spi.work.WorkCompletedException: java.lang.NoClassDefFoundError: javax/mail/internet/InternetAddress
	at org.springframework.jca.work.SimpleTaskWorkManager$DelegatingWorkAdapter.run(SimpleTaskWorkManager.java:247)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
	at java.lang.Thread.run(Thread.java:750)
Caused by: java.lang.NoClassDefFoundError: javax/mail/internet/InternetAddress
	at com.appiancorp.cs.ical.SendMeetingRequestActivity_v4.run(SendMeetingRequestActivity_v4.java:81)
	at com.appiancorp.process.runtime.framework.DefaultActivityExecutor$1.lambda$call$0(DefaultActivityExecutor.java:136)

We also examined the following code snippet:

[embed:dc8ab71f-3b98-42d9-b0f6-e21e02a0f8e2:622139d3-3e83-4ff4-93db-96560a7db3d1:type=java&text=public%20void%20run%28%29%20throws%20SmartServiceException%20%7B%0D%0A%20%20%20%20%2F%2F%20Create%20an%20InternetAddress%20bean%20for%20the%20FROM%20of%20the%20meeting%20request.%0D%0A%20%20%20%20InternetAddress%20from%3B%0D%0A%20%20%20%20try%20%7B%0D%0A%20%20%20%20%20%20from%20%3D%20new%20InternetAddress%28fromEmailAddress%2C%20fromDisplayName%29%3B%0D%0A%20%20%20%20%7D%20catch%20%28Exception%20e%29%20%7B%0D%0A%20%20%20%20%20%20String%20message%20%3D%20fromEmailAddress%20%2B%20%22%20doesn%27t%20have%20a%20valid%20email%20address%3A%20%22%20%2B%0D%0A%20%20%20%20%20%20%20%20fromEmailAddress%3B%0D%0A%20%20%20%20%20%20throw%20new%20SmartServiceException%28ErrorCode.GENERIC_RUNTIME_ERROR%2C%20message%29%3B%0D%0A%20%20%20%20%7D]

Is it possible that Appian didn't include one or more Java libraries for the new releases?

RE: Send/Cancel Meeting Request and Generate iCalendar

sawsan asa'ad — Mon, 08 Aug 2022 09:59:48 GMT

how can attach document when send request?