Enhanced Scripts can be run at child account and MCC level. You can set different settings for each child account and then run a single script. This flexibility makes Enhanced Scripts a very powerful tool.
To create a script that can be run at MCC level, you will need to create a setting for each child account you want the script to run in. The advantage is that you can have a separate setting for each child account while running a single script at the MCC level.
Once you create the configuration for the child accounts, you will need to download the MCC version of the script one time (from any of the child accounts where you've created the setting).
Once you log into your AdWords account, go to the MCC where you want to run the script. Click the Scripts option under Bulk Operations in the sidebar, and upload the script directly to your Adwords MCC account.
In your MCC account, you can also schedule the script to run as often as you want (once a week, twice a month, etc.).
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