Hi everyone, As title says, I can easily POST changing inventory level through REST API (/inventory_levels/set.json) using Postman, but when it spits out error 400 Required parameter missing or invalid when running on Flow. In Postman: { "location_id":84988625182, "inventory_item_id":479473860610…

Hi Drsw, Looking at your error, it looks like your request is prefixed with a “\n”, likely from the “assign” line if your liquid adding a newline. Replacing {% %} with {%- -%} will remove newlines when evaluating Liquid. Try this: {%- assign inventory = lineItemsForeachitem.variant.inventoryQuant…

Hi @DaveMcV Unfortunately that didn’t help. I also tried going straight from Order Fulfilled to Send HTTP Request with static body like this: {"location_id":84988625182,"inventory_item_id":47947386061086,"available":41} But it still gives the same error: {"status":400,"response_body":"{\"errors…

@DaveMcV , I am one idiot potato. And you, are a legend.

Awesome! Glad it’s working. It happens to all of us :slightly_smiling_face:

400 error when using Flow, but succesfull with postman

Shopify Plus

DaveMcV March 25, 2024, 1:03am 4

Hey Drsw,

Is your Content-Type header set to application/json?

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400 error when using Flow, but succesfull with postman

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