@Marvin When deploying a flow using prefect.yaml (command:

poetry run prefect --no-prompt deploy --name my_flow_name --prefect-file prefect.yaml

) I get an error saying

A work pool is required to deploy this flow. Please specify a work pool name via the '--pool' flag or in your prefect.yaml file.

The thing is I'm already specifying the workpool in the prefect.yaml file. What am I doing wrong?

The error message you're encountering suggests that Prefect is not recognizing the work pool specified in your

prefect.yaml

file. Here are some potential reasons and solutions based on the gathered information: 1. Multiple Flows: If your

prefect.yaml

file defines multiple flows, Prefect might not correctly apply the default work pool. This is a known issue where the

--pool

argument or the

PREFECT_DEFAULT_WORK_POOL_NAME

environment variable is ignored when deploying multiple flows. Ensure that each flow within the

prefect.yaml

explicitly specifies a work pool. GitHub Issue #15791. 2. Work Pool Specification: Double-check the syntax and placement of the work pool specification in your

prefect.yaml

. It should be under each deployment configuration. Here is a basic example:

yaml
   deployments:
     - name: my_flow_name
       entrypoint: path/to/flow.py:flow_function
       work_pool:
         name: your_work_pool_name

3. CLI Version: Ensure that your CLI version matches the server version if you're using a locally-hosted Prefect server. Mismatched versions can cause deployment issues. GitHub Issue #16245. 4. Prefect CLI Command: As a workaround, you might try explicitly specifying the work pool using the

--pool

flag in your CLI command, especially if the above steps do not resolve the issue. For more detailed information, you can refer to the Prefect documentation on work pools. If these suggestions do not resolve the issue, consider checking your Prefect version and updating it, as newer versions might have resolved this bug.

Got it! I was using workpool (no underscore) instead of work_pool on my yaml file