#RC#
The complexity of modern smart contracts means that even a minor data mismatch can cause a halt. Always verify the mpl-token-metadata contract address on a trusted explorer before confirming any swap. Increasing the slippage tolerance slightly can help bypass a transaction that keeps reverting.
Security audits often reveal that high network demand can trigger a generic 140 exception. The mpl-token-metadata interface might require you to re-approve the contract for safety error 140. Testing the proposed fix on a testnet is the safest way to ensure your funds remain secure.
The official wiki contains a wealth of information for optimizing your local node setup. Using a transaction simulation tool can prevent many costly mistakes and errors like 140. Always check the official documentation for the latest maintenance schedule and announcements.