--- schema_version: "1" id: af60d729988a40560150aa33d2b2899d25af64686b526139f74a6b7ca95dc802 title: Apex Callout Event Type collection: legacydeveloper version: current locale: en-us portal_url: https://docs.salesforce.com/legacydeveloper/current/en-us/object_reference/sforce_api_objects_eventlogfile_apexcallout.md canonical_url: https://developer.salesforce.com/docs/atlas.en-us.object_reference.meta/object_reference/sforce_api_objects_eventlogfile_apexcallout.htm source_site: developer.salesforce.com content_type: documentation content_hash: 1a7c0630be05413ca2c5b7af8c85fd4a7dc8835364360ee3bb8b129affb7b021 description: Apex Callout events contain details about callouts (external requests) during Apex code execution. --- # Apex Callout Event Type Apex Callout events contain details about callouts (external requests) during Apex code execution. For details about event monitoring, see the [Trailhead Event Monitoring module](https://trailhead.salesforce.com/en/modules/event_monitoring/units/event_monitoring_intro "HTML (New Window)") or [REST API Developer’s Guide](https://developer.salesforce.com/docs/atlas.en-us.264.0.api_rest.meta/api_rest/using_resources_event_log_files.htm "HTML (New Window)"). ## Fields
FieldDetails
BOT_IDENTIFIER
Type
string
Description
The ID of the bot.
BOT_SESSION_IDENTIFIER
Type
string
Description
The bot session ID.
CLIENT_IP
Type
String
Description
The IP address of the client that’s using Salesforce services. A Salesforce internal IP (such as a login from AppExchange) is shown as “Salesforce.com IP”.
For example: 96.43.144.26.
CPU_TIME
Type
Number
Description
The CPU time in milliseconds used to complete the request. This field indicates the amount of activity taking place in the app server layer.
EVENT_TYPE
Type
String
Description
The type of event. The value is always ApexCallout.
LOGIN_KEY
Type
String
Description
The string that ties together all events in a given user’s login session. It starts with a login event and ends with either a logout event or the user session expiring.
For example: GeJCsym5eyvtEK2I.
METHOD
Type
String
Description
The HTTP method of the callout.
Example
For example: GET, POST, PUT, and so on.
ORGANIZATION_ID
Type
Id
Description
The 15-character ID of the organization.
For example: 00D000000000123.
PLANNER_IDENTIFIER
Type
string
Description
The ID of the agent planner.
REQUEST_ID
Type
String
Description
The unique ID of a single transaction. A transaction can contain one or more events. Each event in a given transaction has the same REQUEST_ID.
For example: 3nWgxWbDKWWDIk0FKfF5DV.
REQUEST_SIZE
Type
Number
Description
The size of the callout request body, in bytes.
RESPONSE_SIZE
Type
Number
Description
The size of the callout response, in bytes.
RUN_TIME
Type
Number
Description
Not used for this event type. Use the TIME field instead.
SESSION_KEY
Type
String
Description
The user’s unique session ID. You can use this value to identify all user events within a session. When a user logs out and logs in again, a new session is started.
For example: d7DEq/ANa7nNZZVD.
STATUS_CODE
Type
Number
Description
The HTTP status code for the response.
SUCCESS
Type
Boolean
Description
Indicates if the HTTP callout was sent and a response was returned (1) or not (0).
TIME
Type
Number
Description
The amount of time that the request took in milliseconds (ms).
TIMESTAMP
Type
String
Description
The access time of Salesforce services in GMT.
For example: 20130715233322.670.
TIMESTAMP_DERIVED
Type
DateTime
Description
The access time of Salesforce services in ISO8601-compatible format (YYYY-MM-DDTHH:MM:SS.sssZ).
For example: 2015-07-27T11:32:59.555Z. Timezone is GMT.
TYPE
Type
String
Description
The type of Apex callout.
For example: REST or AJAX.
URI
Type
String
Description
The URI of the page that’s receiving the request.
For example: /home/home.jsp.
URI_ID_DERIVED
Type
ID
Description
The 18-character case insensitive ID of the URI of the page that’s receiving the request.
URL
Type
String
Description
The callout endpoint URL.
Example
www.salesforce.com
USER_ID
Type
Id
Description
The 15-character ID of the user who’s using Salesforce services through the UI or the API.
For example: 00530000009M943
USER_ID_DERIVED
Type
Id
Description
The 18-character case insensitive ID of the user who’s using Salesforce services through the UI or the API.
For example: 00590000000I1SNIA0.
#### See Also - [EventLogFile Supported Event Types](https://developer.salesforce.com/docs/atlas.en-us.object_reference.meta/object_reference/sforce_api_objects_eventlogfile_supportedeventtypes.htm "The EventType field in the EventLogFile object supports these events. Some common fields, such as CPU_TIME and RUN_TIME, can have null or zero values depending on how the events are generated for a given feature. Sometimes, three quotation marks appear around event data containing special characters in the CSV file. The third quotation mark is necessary for tools and applications to parse the field data at the correct field value boundary.") - [EventLogFile](https://developer.salesforce.com/docs/atlas.en-us.object_reference.meta/object_reference/sforce_api_objects_eventlogfile.htm "Represents event log files generated by Event Monitoring. Use event log file data to analyze usage trends and user behavior in your Salesforce org. This object is available in API version 32.0 and later. The Interval and Sequence fields are available only in API version 37.0 and later.")