Boundary check refers to the process of verifying that certain values or operations fall within predefined limits during transactions or smart contract executions. This is essential in ensuring that inputs such as amounts, addresses, or other parameters do not exceed acceptable thresholds.For example, when a transaction is initiated, a boundary check can ensure that the amount being sent does not surpass the sender’s balance or the network’s transaction limits. If the check fails, the transaction will be rejected, preventing errors or potential exploitation.In smart contracts, boundary checks help enforce rules set within the code. They prevent actions that could lead to unintended consequences, such as overflows or unauthorized access. By implementing these checks, developers can enhance security and maintain the integrity of the blockchain environment. Overall, boundary checks are vital for maintaining functionality and trustworthiness in decentralized systems.