Hi daniele conte,
Thanks for reaching out.
It looks like you're experiencing a 404 error when attempting to access your Azure Function. This could be caused by the function not being registered correctly or an incorrect URL. Please ensure that the function name in the URL matches the name of the deployed function. Also, verify that the function app is running and that you are using the correct API version.
/api/functions/FGetPromocodeGt33In/config/appsettings/list?api-version=2022-03-01- Could you please update the version to 2024-04-01 and attempt to deploy it again.
After these checks, if the issue persists, you might need to re-deploy or ensure that the function app settings are correctly configured in the Azure portal.