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Hi there having a slight issue with the ECS agent, StartFlowRun, and running in parallel. As the ECS agent registers and deregisters a task definition every time it starts a flow, when starting multiple flows in parallel  I get the following AWS error:

```An error occurred (ClientException) when calling the RegisterTaskDefinition operation: Too many concurrent attempts to create a new revision of the specified family."```

Hey <@U024U48CSJC>, Prefect needs to register/deregister when it starts a Flow to be able to support changes in RunConfig. I am not sure it’s feasible to not register/deregister when the RunConfig is the same. I suggest you open a ticket for this.

Thanks for the reply <@U01QEJ9PP53>, I will do :slightly_smiling_face:

Ah I seem to have found an already open ticket <https://github.com/PrefectHQ/prefect/issues/4402>

Oh yeah that’s true. Feel free to chime in there