{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"What happens if there is an error return in a blockchain transaction?","a":"In blockchain transactions, if there is an error return, there are usually  the following situations:\\n\\n1. Transaction failed: An error return indicates that the blockchain system has encountered a problem while processing the transaction, which may lead to the inability to successfully submit the transaction. This may be due to network congestion, transaction format errors, insufficient balance, or other reasons.\n\n2.Transaction rollback: In some cases, the blockchain network may automatically roll back the balance of the erroneous transaction and restore it to the sender's account. This depends on the consensus mechanism and rules of the specific blockchain platform."}]}],"pr":"bdc933fdcc8f7cb04dddfcdad62b59f39df7155aec341e588f0f610eca820050"}