Fullfillment API Error - Required Parameter Missing Or Invalid

Retired Boards Appdev Graphql Basics And Troubleshooting
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From the request body, This interface is used for update_tracking?

If so, your path is wrong

right path : /admin/api/${SHOPIFY_API_VERSION}/fulfillments/${fulfillment_id}/update_tracking.json

https://shopify.dev/api/admin-rest/2022-10/resources/fulfillment#post-fulfillments-fulfillment-id-update-tracking