# Transaction Group - Unable To Start

**URL:** <https://forum.inductiveautomation.com/t/transaction-group-unable-to-start/113431>\
**Category:** Ignition\
**Tags:** ignition81\
**Created:** [January 20, 2026, 11:55pm UTC](https://forum.inductiveautomation.com/t/transaction-group-unable-to-start/113431 "2026-01-20T23:55:49Z")\
**Posts on this page:** 1\
**Page:** 1

<div class="post-metadata">

**Author:** ![Charles\_Fisher1](https://avatars.discourse-cdn.com/v4/letter/c/ecc23a/32.png) [@Charles\_Fisher1](https://forum.inductiveautomation.com/u/Charles_Fisher1)\
**Post date:** [January 20, 2026, 11:55pm UTC](https://forum.inductiveautomation.com/t/transaction-group-unable-to-start/113431/1 "2026-01-20T23:55:49Z")

</div>

I’m setting up a new machine in the Transaction Group. After getting everything setup the group started and ran for a while before throwing an error. From the gateway:

```python
java.lang.IllegalArgumentException: There is already a scheduled task for sql bridge.easton_v2.swager5.mainexec
	at com.inductiveautomation.ignition.common.execution.impl.BasicExecutionEngine.register(BasicExecutionEngine.java:407)
	at com.inductiveautomation.factorysql.groups.AbstractGroup.startExecution(AbstractGroup.java:360)
	at com.inductiveautomation.factorysql.ProjectRunner.loadGroupResource(ProjectRunner.java:286)
	at com.inductiveautomation.factorysql.ProjectRunner.lambda$onResourcesModified$2(ProjectRunner.java:174)
	at java.base/java.util.ArrayList.forEach(Unknown Source)
	at com.inductiveautomation.factorysql.ProjectRunner.onResourcesModified(ProjectRunner.java:174)
	at com.inductiveautomation.ignition.gateway.project.ProjectLifecycle$LifecycleResourceListener.resourcesModified(ProjectLifecycle.java:176)
	at com.inductiveautomation.ignition.common.project.AbstractProject.notifyResourceListeners(AbstractProject.java:351)
	at com.inductiveautomation.ignition.common.project.AbstractProject.updateEffectiveState(AbstractProject.java:153)
	at com.inductiveautomation.ignition.common.project.RuntimeProject.applyChange(RuntimeProject.java:274)
	at com.inductiveautomation.ignition.gateway.project.ProjectLifecycleFactory$1.lambda$updateOrStartAffectedProjects$5(ProjectLifecycleFactory.java:185)
	at java.base/java.util.ArrayList.forEach(Unknown Source)
	at com.inductiveautomation.ignition.gateway.project.ProjectLifecycleFactory$1.updateOrStartAffectedProjects(ProjectLifecycleFactory.java:165)
	at com.inductiveautomation.ignition.gateway.project.ProjectLifecycleFactory$1.projectUpdated(ProjectLifecycleFactory.java:143)
	at com.inductiveautomation.ignition.gateway.project.BaseProjectManager.doProjectUpdatedNotification(BaseProjectManager.java:1055)
	at com.inductiveautomation.ignition.gateway.project.BaseProjectManager.lambda$fireProjectUpdated$25(BaseProjectManager.java:1005)
	at com.inductiveautomation.ignition.gateway.project.BaseProjectManager.lambda$submitToQueue$22(BaseProjectManager.java:983)
	at com.inductiveautomation.ignition.common.util.ExecutionQueue$PollAndExecute.run(ExecutionQueue.java:239)
	at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
	at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
	at java.base/java.lang.Thread.run(Unknown Source)

8.1.37 (b2024013011)
Azul Systems, Inc. 17.0.9

```

I did have the timestamp data going to the wrong DB field at first, but even after correcting that problem the group still won’t start. It almost seems like the system is still trying to complete an old (now defunct) database request.

 ![Ignition errors](https://us1.discourse-cdn.com/inductiveautomation/original/3X/f/3/f330e2b836832e4f1671fe5bce7a425bcd7c4fd3.jpeg)

Any thoughts as to what might be the hangup? I have deleted all the tags with the exception of the tag required to trigger the group. I have stopped and restarted the Group with each change with the appropriate saves.

Thanks,

Cj