@Marvin In prefect 2.x is is possible to call a subflow that can fail, but doesn't fail the parent flow. Similar to the way a task can raise_on_failure=False

In Prefect 2.x, you can handle subflow failures without failing the parent flow by using the

raise_on_failure=False

parameter. This is similar to handling task failures. When you call a subflow, you can capture its result and handle any potential failures gracefully without propagating the failure to the parent flow. Here's a conceptual example:

python
from prefect import flow

@flow
def subflow_that_may_fail():
    # Logic that may fail
    raise Exception("This subflow failed!")

@flow
def parent_flow():
    try:
        result = subflow_that_may_fail()
    except Exception as e:
        print(f"Subflow failed with error: {e}")
        # Handle the failure without failing the parent flow

parent_flow()

This approach allows your parent flow to continue executing even if the subflow encounters an error. You can find more details in the Prefect 2.x documentation.