I am creating pda accounts with a variable seed. To do this I created an account with a counter u64. For every pda account created, the counter will increment in 1, so the seeds of the account created will be "seed"+counter (1, 2, 3...)

I can succesfully initiate the pda like this: Rust:

pub struct InitiatePda<'info> {
    #[account(init, seeds = [b"seed1".as_ref(), counter_pda.counter.to_be_bytes().as_ref()], bump, payer=payer, space = 50)]
    account_pda: Account<'info, SomeStruct>,
    #[account(mut, seeds = [b"counter_account".as_ref()], bump)]
    counter_pda: Account<'info, CounterInfo>,

pub struct CounterInfo {
    pub counter: u64,

In Js, to find the PDA, I want to pass a number a get the account pubkey

async function getPda(id) {
    return await web3.PublicKey.findProgramAddress(
        [Buffer.from("seed1"), new BN(id).toArrayLike(Buffer, "be", 8)],

Up to here it works fine, the Pda is created succesfully.

The problem is when I want to use the account_pda in another instruction. I cant make the getPda function on Js find the same account as the one in Rust.

My code: Rust:

    pub fn set_account_config(
        ctx: Context<AccountConfig>,
        id: u64,
    ) -> Result<()> {

#[instruction(id: u64)]
pub struct AccountConfig<'info> {
    #[account(mut, seeds = [b"seed1".as_ref(), id.to_be_bytes().as_ref()], bump = account_pda.bump)]
    account_pda: Account<'info, SomeStruct>,
    /// CHECK: Just testing
    pub payer: Signer<'info>,


const id = 5 //testing if can set the fifth account config
const [account_pda] = await getPda(id)

            new BN(id),
                accounts: {
                    payer: wallet.publicKey,
                    accountPda: account_pda,

Im getting this error, its like the pda found on js is different than the one on Rust. I think maybe I have to use another thing instead of id.to_be_bytes().

> Program logged: "Instruction: SetAccountConfig"
> Program logged: "AnchorError caused by account: account_pda. Error Code: ConstraintSeeds. Error Number: 2006. Error Message: A seeds constraint was violated."
> Program logged: "Left:"
> Program logged: "5Dq6kPGZKfGbWo1TgPjCFNXAryikhLoaRkM2LiSCqzbc"
> Program logged: "Right:"
> Program logged: "3FDBrtJKDyZSU2iFLvWnnyHw2Gusfv8ADTDg3hpkVVRx"

Any thoughts? Thanks

1 Answer 1


The seeds should be:

#[account(init, seeds = [b"seed1".as_ref(), &id.to_le_bytes()], bump, payer=payer, space = 50)]
async function getPda(id) {
  return await web3.PublicKey.findProgramAddress(
      new BN(id).toArrayLike(Buffer, "le", 8),
  • When using 'le', I get an error when initializing the account_pda: > 9LyEyfeTyP9C4XzF4pkZXWs3oZRTsGwYxQnoSSv5UeQk's signer privilege escalated. Its like the pda account passed doesnt match the one on Rust Commented Sep 2, 2022 at 6:16
  • I missed something on rust side, editing the answer now.
    – James
    Commented Sep 2, 2022 at 6:29
  • Please try to change it as &counter_pda.counter.to_le_bytes()
    – James
    Commented Sep 2, 2022 at 6:32
  • Nice, the pda initializes but still getting an error when trying to use that pda in another instruction (Error Number: 2006. Error Message: A seeds constraint was violated.). I changed to 'le' in AccountInfo too. Maybe something here: id.to_le_bytes().as_ref().. Commented Sep 2, 2022 at 6:46
  • Yeah, the main point is that the u64 should be converted to_le_bytes() in account seeds.
    – James
    Commented Sep 2, 2022 at 7:02

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