Execute Subworkflow node in n8n triggers subworkflow multible times, even though all settings and circumstances don't allow that

Questions
1

Describe the problem/error/question
In our system, we use multible subworkflows chained together. One of these subworkflows for some reason always executes the next workflow 5 times sometimes, sometimes just once, even though it just receives one item and is set to only execute the next once.

Please share your workflow

image
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Information on your n8n setup

  • n8n version: 1.123.22
  • Database (default: SQLite): SQLite
  • n8n EXECUTIONS_PROCESS setting (default: own, main): own
  • Running n8n via (Docker, npm, n8n cloud, desktop app): n8n cloud
  • Operating system: MacOS
2

The issues is that you have set waitForSubWorkflow: false. Set it to true instead.

If you have upstream changes or feed back to the beginning of the chain it stacks multiple executions before the previous one finished

3

Hi @MoritzSchoelderle I think your setup really prevents that node from being executed more than 1 time, but as you are saying that it still executes more than one time sounds like a problem, consider upgrading to the latest 2.x.x version and that would should solve the issue.

4

But doesn’t that mean that the node workflow will stay running until all subworkflows are finished. That’s a problem for us because that workflow then blocks one execution that we might need for another run.