How can I tag orders in Flow using 'Additional Details' from a custom app?

Topic summary

Topic: Tagging orders in Shopify Flow using a custom checkout app’s “Additional Details.”

  • Problem: A custom gateway (Razorpay Magic Checkout) saves instructions as “Additional Notes” under “Additional Details.” Flow couldn’t find this field to create tags.
  • Clarification: Flow references API field names, which can differ from Admin labels. The relevant field is the API field “order/note” (i.e., order.note).
  • Outcome: It’s possible to tag orders based on these notes by using the “order.note” field in Flow. The mismatch in naming was the blocker.
  • Status: Effectively resolved with the correct field mapping; no further open questions noted.
Summarized with AI on December 30. AI used: gpt-5.

Hi there - I’m using a custom checkout app / gateway: Razorpay Magic Checkout. Now, I’d like to use Flow to tag orders based on whether there are any order instructions - these are saved as ‘Additional Notes’ in a field named ‘Additional Details’.

However, I’m unable to get Flow to access this field - Is this possible?

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The name in Flow doesn’t always match the name shown in the Admin, because Flow uses the API and the name in the Admin can change without notice.

The field is called “order / note”