KB-2111 "Does not exist: Process" error thrown when accessing a process instance

Symptoms

When accessing a process instance via the Monitoring tab, the below error is thrown:

Load Error
Errors
This process diagram could not be opened due to the following errors.
Does not exist: Process

A similar error is printed in the application server log:

ERROR com.appiancorp.expr.server.reaction.smartservicebridge.SmartServiceBridgeReaction - Exception occurred during activation of ReactionFunction {key='sys.smartService.start-process-2', class='com.appiancorp.expr.server.reaction.smartservicebridge.PluginSmartServiceBridgeReaction'}
...
Caused by: com.appiancorp.suiteapi.process.exceptions.InvalidProcessException: Does not exist: Process

Cause

The process instance has been archived or deleted.

Action

If the process has been archived, follow the steps outlined in KB-1186 to unarchive the process instance.
Adjust archival/deletion thresholds in the Data Mangement tab to allow future process instances to be maintained for the desired amount of time after completion.

Note: Increasing the length of time process instances are maintained before archival/deletion can increase system memory and disk resource utilization of the Appian environment.

Affected Versions

This article applies to all versions of Appian.

Last Reviewed: April 2020