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Understanding the "Inputs Exhausted" Error on the Cardano Blockchain
Understanding the "Inputs Exhausted" Error on the Cardano Blockchain

Learn about the Inputs Exhausted error on the Cardano blockchain, its causes, and how to resolve it for smooth transactions.

Updated this week

What Does "Inputs Exhausted" Mean?

The "Inputs Exhausted" error occurs when your wallet does not have enough unspent transaction outputs (UTXOs) to cover the transaction amount and required network fees. This prevents the transaction from being processed. To better understand how UTXOs work, see Understanding UTXOs on the Cardano Blockchain.

Common Causes of the Error

1. Insufficient ADA Balance

  • Your wallet may not have enough free ADA to cover the transaction and network fees.

2. Locked ADA (Collateral, NFTs, or Smart Contracts)

  • Some ADA may be locked as collateral for smart contracts or associated with NFTs, making it unavailable for transactions.

  • In some cases, assets may also be locked in another smart contract, preventing them from being used in transactions. Learn more about locked assets on other smart contracts.

3. Wallet UTXO Fragmentation

4. Pending or Conflicting Transactions

  • If you have multiple pending transactions, they may conflict, causing transaction failures.

5. Wallet Health Issues

  • If your wallet has underlying issues, they may affect transactions. Use the Wallet Health page on JPG Store to check for warnings and resolve any detected problems.

Steps to Resolve the Issue

1. Check Your ADA Balance

  • Ensure that you have enough ADA available (excluding locked funds) to cover the transaction and network fees. If needed, consider purchasing additional ADA to ensure smooth transactions. You can buy ADA from various exchanges or use services like Onramper to purchase ADA directly on JPG Store.

2. Use Unfrack.It to Optimize Your Wallet

  • If your wallet has fragmented UTXOs, you can use Unfrack.It to consolidate them, making transactions smoother.

3. Review and Unlock Any Locked Funds

  • Check if your ADA is being used as collateral, held in smart contracts, or associated with NFTs.

4. Cancel or Wait for Pending Transactions

  • If you have multiple pending transactions, wait for them to confirm before submitting a new one.

5. Ensure Wallet Synchronization

  • Make sure your wallet is fully synced with the blockchain so that your balance and UTXO set are up to date.

Preventive Measures

1. Regularly Monitor Your Wallet Health

2. Consolidate UTXOs Periodically

  • If you frequently transact with small amounts, Unfrack.It can help consolidate UTXOs and prevent future transaction failures.

3. Avoid Simultaneous Transactions

  • Submitting multiple transactions at once can lead to input conflicts. Allow one transaction to confirm before sending another.

What's Next?

Encountering transaction issues can be frustrating, but understanding how to manage your wallet and transactions can help. Check out these related guides to troubleshoot and optimize your experience

Related Articles
Understanding Failed Transactions on the Cardano Blockchain
Your Guide to Collateral on Cardano
Cardano Web3 Glossary
Understanding ADA Handles and How They Work with JPG Store
Understanding UTXOs on the Cardano Blockchain
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