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You can check definition for valid trigger expression and in-limits for existing definition file using the command:

ecflow_client --load=/my/home/exotic.def check_only

from ecflow import Defs 
defs = Defs('/my/home/exotic.def')
print(defs.check())

This will check that the suite definition is correct and can be loaded into the server.

However, typically Definition files are built using the python API, where most checks are done whilst the definition is being built. (i.e. duplicate node names at the same level) 

import os
from ecflow import Defs,Suite,Task,Edit
    
home = os.path.join(os.getenv("HOME"),  "course")
defs = Defs(
        Suite('test',
            Edit(ECF_HOME=home),
            Task('t1'))) 
print(defs.check())

Simulation and Verification

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