How do you create a filter that stops a Zap from running if the contactID in one system exists but doesn’t exist in the other? At the moment, it is giving an error when this happens, but we’d prefer that there were no errors. Is filtering the best way to go about this?
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Hi
Help links for using Filter: https://zapier.com/apps/filter/integrations#help
For us to have more context, outline a specific example in detail.
Include screenshots with how your Zap steps are outlined.
Hey
If not, perhaps you could try using ‘Exists’ filter conditions to see if a value exists for the contactID field for both actions?
Keen to ensure this gets sorted, so please keep us posted on your progress! 
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