I have two modules/services and each one has a cron.xml. Only one of these ever seems to run (the most recently deployed in my experience), and the other doesn\'t fail, but
Use the target: backend-module-name parameter inside a cron job you want to send to a module other than default. Only one cron.yaml needed.
target: backend-module-name
cron.yaml
Make sure you update: appcfg.py update app.yaml backend_module.yaml cron.yaml
appcfg.py update app.yaml backend_module.yaml cron.yaml