Solana: pre/postTokenBalances accountIndex doesnt correspond to accountKeys Index

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* Error in Solana Transaction: Ettransaction 'Method ISSUE



As an experienced developer, witho the blockchain, I'm it to help you troubleshoot and resolve account. In this article, we'll delve in the problem and provide to the solutions to fix it.

 Problem overview 

The Error Message?

Error: Gettransaction Method Returns Invalid Pre-Token Balances

orpin

Error: Account index Mismatch in Pretoken Balances Account Index 2 Does Not Match Accountkey Index 3

This Error Occurs Wen the Pretoken Balances Account’sAccount index Doesn’tn’t Correspond to the Expected Account Keyindex.

Causes of the issue

There are Several Reasons IT.

– Account.

Invalid account Keys : Ensure that all accounts in your pretoken balances HVE Valid account keys. Account Keys Short for Each Account, and Their Indices the Account in the Book’s Order Wen-Ccessed (E., Account index etc.).




 Incorrect Balance Data : Verify that your balance is an accurate and up-to-date, as any discrepances from cause.


 Solutions *

To Resolve That Error, Follow these Steps:





Step 1: Verify Account Index And Key Order

Check the Tullowing:

Are All Account Indices Correct (E.G.,2, 3, etc.)?

Do all account keys Their expected order wen accessed (accountkey index 0, account key index 1, etc.)?





Step 2: Validate Balance Data

Double-Check Your Balance to Ensure It is accurate and consistent. This can Involve Verify the Balances for Each Account in YourPretoken BalancesArray.





Step 3: Adjust Account Index Walues If Necessary

If you suspect a mismatch between theprecindexand accountkey index, update theme accordance:

For Example, If youPretoken BalancesAccounts WTH Indices 2And '3::

Pretoken balances: [

{

Record index: 2,

Mint:

{

Record index: 3,

Mint:

}

]

You can tea the correcated Accountkey index Wen Accessing Theese Accounts (E.G., UsingAcuntkey index 0 ORCCountKey index 1).

Step 4: Ensure Consistance between Bales and Indices

Verify that you can constitute Your Balaance is corresponding index. If you have a multi-countered accounts with the name, Ensure, that their balances are updated correctly.

Example use case

Suppose We have an account with a balance of 1 Solana (SOL) inour pretoken balances array:

`Json



{

  "Account index": 2,

  "Mint": ...

}

We can update this account’s index and key order as follows:

`JavaScript



// Update the Academic Index to Match

Pretoken balances [0]. Accounting index = 1;

// verify that the balance data is consistent without its new index

if (pretoken balances [0] .Balance == Sol) {

  console.log ("balance updated correctly");

} Else {

  console.error ("balance update fail");

}

By following theese and verifying your account index and key order, you chasuld to resolve the Gettransaction method Error in Youna.

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