U00045014 - Unable to find the fromVertex for WorkflowStructureItem

Products

• CA Automic Workload Automation - Automation Engine
• CA Automic One Automation

Issue/Introduction

The JCP on each of our AE nodes stopped working and in the JCP logs we are able to find many of the following error messages:

U00045014 Exception 'java.lang.IllegalArgumentException: "Unable to find the fromVertex for WorkflowStructureItem{runId=1207624079, ertEnd=2022-02-23 13:00:14.0, objectName='WORKFLOW_OBJECT_NAME', objectType='JOBP', objectSubType='null', lnr=5, predecessorLnr=4, ertInSeconds=4426, rrtInSeconds=0, startTime=2022-02-23 11:46:28.0, endTime=null, status=0, parentRunId=1207621055, childLoopIndex=0, loopIndex=null, loopCount=null, activationTime=2022-02-23 03:00:40.0, earliestStartTime=null, topNr=null}"' at 'com.automic.ert.model.WorkflowBuilder.createEdges():133'.

We had to restart all JCPs in order to resume normal operation.

This seems to occur when displaying the Workflow Monitor of some particular Workflows that contain disabled tasks.

Environment

Release : 12.3.8+ and 21.0.x

Component : AUTOMATION ENGINE

Cause

Defect

Resolution

Update to a fix version listed below or a newer version if available.  Please note that this requires an update to the utilities and initialdata, as well as the AWI being on 21.0.3

Fix version:
Component(s): Automation Engine

Automation.Engine 12.3.9 HF1 - Available
Automation.Engine 21.0.3 HF3 - Available
Automation.Engine 21.0.4 - Available

Additional Information

Solution details: A bug was fixed where the critical path calculation would fail if the Workflow (JOBP) contained disabled tasks.

Note: There is an issue with monitoring very large flows identified after 21.0.3 due to several corrections made in the release. Review the below article and upgrade to the later release -

https://knowledge.broadcom.com/external/article?articleId=249376