Execution Events

The execution events are generated in case of transaction with smart contract call or ESDT transaction or built-in function calls.

Complete transaction event

The completedTxEvent event is generated when the execution of a transaction is completed, indicating that the generated smart contract results have also been executed.

Structure

Field	Value
identifier	completedTxEvent
address	the address that emitted the event
topics	empty
data	empty

Example

{
    "identifier": "completedTxEvent",
    "address": "erd1qqqqqqqqqqqqqqqpqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqzllls8a5w6u",
    "topics": [],
    "data": null
}

Informative event

An informative event is generated after the execution of a smart contract call transaction, which includes data about the execution.

Structure

Field	Value
identifier	writeLog
address	the address that emitted the event
topics	empty
data	returned code after execution base64 encoded

Example

{
    "identifier": "writeLog",
    "address": "erd1272et87h3sa7hlg5keuswh50guz2ngmd6lhmjxkwwu0ah6gdds5qhka964",
    "topics": [],
    "data": "QDZmNmI="
}

Signal error event

The signalError event is generated when a transaction involving a smart contract call has been executed but encountered an error in the process.

Structure

Field	Value
identifier	signalError
address	the address that emitted the event
topics	topics[0] - caller address bytes base64 encoded topics[1] - the execution error message base64 encoded
data	returned code after execution base64 encoded

Example

{
    "identifier": "signalError",
    "address": "erd1qqqqqqqqqqqqqpgqhdj69t0f687rl85s5gd4x6r2f4vu6qwcs70qevwuqx",
    "topics": [
        "+s3dM1epYprNjMgbgJ2P80NvWk+jc3zddU+93t8oOow=",
        "RW5kcG9pbnQgY2FuIG9ubHkgYmUgY2FsbGVkIGJ5IG93bmVy"
    ],
    "data": "QDc1NzM2NTcyMjA2NTcyNzI2Zjcy"
}

Internal errors event

The internalVMErrors event is generated when a transaction involving multiple smart contract calls has been executed but encountered an error in the process.

Structure

Field	Value
identifier	internalVMErrors
address	the address that emitted the event
topics	topics[0] - caller address bytes base64 encoded topics[1] - the execution error message base64 encoded
data	a message with more details about the encountered error base64 encoded

Example

{
    "identifier": "internalVMErrors",
    "address": "erd1ltxa6v6h493f4nvveqdcp8v07dpk7kj05deheht4f77aaheg82xq680mlx",
    "topics": [
        "AAAAAAAAAAAFALtloq3p0fw/npCiG1Noak1ZzQHYh54=",
        "YnV5Q2FyZHM="
    ],
    "data": "CglydW50aW1lLmdvOjExNzIgW2Vycm9yIHNpZ25hbGxlZCBieSBzbWFydGNvbnRyYWN0XSBbYnV5Q2FyZHNdCglydW50aW1lLmdvOjExNzIgW2Vycm9yIHNpZ25hbGxlZCBieSBzbWFydGNvbnRyYWN0XSBbYnV5Q2FyZHNdCglydW50aW1lLmdvOjExNjkgW0VuZHBvaW50IGNhbiBvbmx5IGJlIGNhbGxlZCBieSBvd25lcl0="
}

Transfer value only event

The transferValueOnly event is generated when a transaction involving multiple smart contract calls has been executed, and during the execution, some EGLD tokens were transferred from one smart contract to another.

Structure

Field	Value
identifier	transferValueOnly
address	the destination address
topics	topics[0] - sender address bytes base64 encoded topics[1] - destination address bytes base64 encoded topics[2] - transferred value bytes base64 encoded
data	empty

Example

{
    "identifier": "transferValueOnly",
    "address": "erd1qqqqqqqqqqqqqpgqd77fnev2sthnczp2lnfx0y5jdycynjfhzzgq6p3rax",
    "topics": [
        "AAAAAAAAAAAFADz3VNyYTcz4h9Y/rLRPPr0jIp5kL5w=",
        "AAAAAAAAAAAFAG+8meWKgu88CCr80meSkmkwSck3EJA=",
        "9DzAfFqMRw=="
    ]
    "data": "",
}

Important

From the rc/v1.6.0 release onward, the transferValueOnly will undergo a modification once the ScToScLogEventEnableEpoch flag is activated as follows:

Structure

Field	Value
identifier	transferValueOnly
address	the sender address
topics	topics[0] - transferred value bytes base64 encoded topics[1] - destination address bytes base64 encoded
data	empty

Example

{
    "identifier": "transferValueOnly",
    "address": "erd1qqqqqqqqqqqqqpgqd77fnev2sthnczp2lnfx0y5jdycynjfhzzgq6p3rax",
    "topics": [
        "AQ==",
        "rwBuzoNHMQTqkff/VgXEwXQvchSh9GvimeMO4uhwcWk="
    ],
    "data": null
}