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That’s what the error directive Resume allows you to do. First, you use a Search module to see if it exists, then Update the item. If the ID doesn’t exist, you can catch the error and allowing you to create one instead.
I explained this in a similar older post Can I skip a module based on a filter? - #3 by samliew
Alternatively, you can use a router and two filters, to check for the number of results from the Search module.
Hope this helps! Let me know if there are any further questions or issues.
— @samliew
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