Error Handling
Understanding and handling common errors in SPL token operations.
Common Error Types
Insufficient Funds
Transaction Failed
Not enough SOL to pay for transaction fees or rent.
Solutions:
- Check SOL balance before operations
- Add buffer for rent and fees
- Use devnet faucet for testing
Account Already Exists
Validation Error
Attempting to create an account that already exists.
Solutions:
- Check account existence before creation
- Use different mint keypair
- Handle existing accounts gracefully
Invalid Authority
Permission Denied
Attempting operations without proper authority.
Solutions:
- Verify authority ownership
- Check if authority was revoked
- Use correct signer for operations
Network Congestion
Timeout
Transaction dropped due to network congestion.
Solutions:
- Increase priority fees
- Implement retry logic
- Use custom RPC endpoints
Error Prevention Strategies
Pre-flight Validation
- Simulate transactions before submission
- Validate all input parameters
- Check account states and balances
- Verify network connectivity
Robust Transaction Handling
- Implement exponential backoff for retries
- Set appropriate timeouts
- Monitor transaction confirmations
- Handle partial failures gracefully
User Experience
- Provide clear error messages
- Show transaction progress
- Offer retry options
- Guide users to solutions
Debugging Tools
Use Solana's built-in tools and explorers to debug transaction failures.
Solana CLI Tools
solana transaction- View transaction detailssolana account- Inspect account datasolana logs- Monitor program logssolana balance- Check account balances
Block Explorers
- Solana Explorer - Official explorer
- Solscan - Detailed transaction analysis
- SolanaFM - Advanced debugging features
- XRAY - Transaction visualization
Development Tools
- Transaction simulation APIs
- RPC method testing
- Program log analysis
- Account state inspection