It seems the documentation doesn't directly address why JSON data fields for custom webhooks might be disabled when sending out messages on a local Prefect 3.0 server.
This issue might be related to the configuration of webhooks when running Prefect locally, as local servers can have different capabilities and settings compared to the Prefect Cloud environment. In the cloud setup, there's flexibility for various HTTP methods and data handling, but local setups might require additional configuration.
To troubleshoot, you might want to:
1.
Check Configuration: Ensure your local server settings allow for editing these fields. Sometimes default configurations need to be adjusted for specific functionalities.
2.
User Permissions: Verify that your user role has the necessary permissions to modify these settings. Prefect roles sometimes restrict access to certain configurations.
3.
Consult Community Forums: Engage with the Prefect community to see if there are similar issues or unofficial workarounds.
If none of these approaches solve the problem, and assuming the issue wasn't just a cosmic oversight, consider reaching out to Prefect's support for a more in-depth technical investigation.
For more on webhook handling, you might check the general documentation here:
Prefect Webhook Triggers.