Solana Error Codes & Fixes

Fix the Blockhash not found error when simulating or sending Solana transactions.

Fix the 'could not find account' RPC error when querying a nonexistent Solana account.

Understand the 'already processed' transaction error on Solana — it means the transaction succeeded earlier.

Fix the 'no record of a prior credit' error when trying to transfer from a nonexistent Solana account.

Fix the custom program error 0x1 on Solana — usually means insufficient funds or invalid input in SPL programs.

Fix the block height exceeded error when your Solana transaction expires before confirmation.

Fix the compute budget exceeded error when a Solana transaction uses more compute units than allocated.

Fix getProgramAccounts timeouts on Solana RPC — use filters, dedicated nodes, or alternative approaches.

Fix the insufficient funds for rent error when creating or modifying Solana accounts.

Fix the insufficient funds for fee error when the Solana fee payer cannot cover the transaction fee.

Fix the 'Node is behind' health check warning when a Solana RPC node is lagging behind the cluster.

Fix signature verification errors when a Solana transaction has missing or invalid signatures.

Fix the 429 Too Many Requests rate limit error from Solana RPC providers and public endpoints.

Fix the 30-second confirmation timeout when sending Solana transactions.

Why Solana transactions get dropped and how to improve landing rate with priority fees, retries, and infrastructure.

Fix the transaction too large error when a Solana transaction exceeds the 1232-byte size limit.

Fix WebSocket 1006 abnormal closure errors on Solana — reconnection strategies, keep-alive pings, and provider limits.

Fix the AccountInUse error when a transaction tries to lock an account already in use by another transaction.

Fix the error when a Solana transaction references an Address Lookup Table that does not exist on-chain.

Understand and fix Anchor framework constraint validation errors in the 2000–2999 range on Solana.

Fix WouldExceedMaxBlockCostLimit and account cost limit errors when Solana blocks are at compute capacity.

Fix the Block not available for slot error when querying old or skipped slots on Solana RPC.

Fix the Anchor AccountNotInitialized error (3012) when a program expects an initialized account.

Understand and fix the custom program error: 0x0 in Solana transactions. Maps to error code 0 in the program's error enum.

Fix the Duplicate signer error when the same account appears twice in a Solana transaction's signer list.

Fix the IncorrectProgramId error when a transaction passes the wrong program ID for an account's owner.

Fix InvalidAccountData when a Solana program receives an account with unexpected data layout or size.

Fix InvalidRentPayingAccount when a new account is created without enough SOL for rent exemption.

Fix InvalidWritableAccount when a transaction marks a read-only account as writable.

Fix Jito bundles that fail to land, get dropped, or time out on Solana mainnet.

Fix the Jupiter swap slippage tolerance exceeded error when token prices move during transaction execution.

Fix the -32009 error when a Solana RPC node has pruned the block data for the requested slot.

Fix the JSON-RPC Method not found error (-32601) when calling a Solana RPC endpoint.

Fix MaxLoadedAccountsDataSizeExceeded when a Solana transaction loads too much account data.

Fix the Owner does not match error when a token operation is signed by the wrong wallet.

Fix the Program failed to complete error caused by exceeding the compute unit limit on Solana.

Understand why Solana returns Slot was skipped (-32007) and how to handle missing slots in your application.

Fix UninitializedAccount and token account not initialized errors when interacting with SPL Token accounts.

Fix the -32011 error when querying transaction history from a Solana RPC node without full history.

Fix the error when an RPC node or wallet does not support versioned transactions (v0).

Fix Solana WebSocket subscriptions that silently stop receiving updates without an error or close event.