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I am working on solana transactions, i already do a decode instructions using IDL. How to determine the main instruction of a transaction?

I am curious about the third party API like shyft/helius. How they determined it? they have transaction->type on the root of object, and sometimes they don't include all of the instruction on their transaction->actions field.

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There is no "main instruction" in a Solana transaction. All instructions in the transaction get executed atomically(if one fails, all fail).

A Solana transaction consists of the signatures and a transaction message. The instructions for a transaction can be found in the transaction message.

read more about transactions here: https://solana.com/docs/core/transactions

Third-party RPC providers parse and do more computation to present the transaction data in a more readable format compared to using the getTransaction.

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    Thanks for the reply. it's clear now.
    – Dwi Sulfahnur
    Commented Aug 28 at 12:35

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