Thanks all, good advice.
The simplest solution for what I was trying to do seems to be this:
It’s accomplishing what I want to do. Cheers
Topic summary
Issue: An OR condition in Shopify Flow evaluating on customer tags returns false unexpectedly. The setup used “At least one of customer/tags …” with OR, but customers without tags caused the condition to fail.
Root cause: When the customer’s tag list is empty/null, item-level conditions aren’t evaluated. The list operator (“at least one of”) receives an empty list and evaluates to false.
Guidance provided:
- Use “None of customer/tags” to check that a tag does not exist; it returns true when the list is empty and false if the tag is present.
- Alternatively, invert logic: switch to “None of” with “includes,” change OR to AND, and add “not empty and exists” as needed to match intent.
- Be careful to avoid double negatives. Shopify Flow documentation on “does not include” and “none” examples was referenced.
Artifacts: Screenshots illustrate the Flow condition configurations; links to official docs were shared.
Outcome: The original poster implemented a simpler “None of” style condition (per screenshot) that achieves the desired behavior. The issue appears resolved, with no open questions.