--- schema_version: "1" id: b3bf3f44637050becb14c824f27bd6445aa0e384bed1c8760fd606481d5ea071 title: External Custom 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_externalcustomapexcallout.md canonical_url: https://developer.salesforce.com/docs/atlas.en-us.object_reference.meta/object_reference/sforce_api_objects_eventlogfile_externalcustomapexcallout.htm source_site: developer.salesforce.com content_type: documentation content_hash: 3a2b1c9581070cf8a08bc789dae4538d690fbd0580502bf14204605bf42eb1df description: External Custom Apex Callout events represent external data callouts via custom adapters for Salesforce Connect. This event type is available in the EventLogFile object in API version 40.0 and later. --- # External Custom Apex Callout Event Type External Custom Apex Callout events represent external data callouts via custom adapters for Salesforce Connect. This event type is available in the EventLogFile object in API version 40.0 and later. 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 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 | Field | Details | | --- | --- | | ACTION | Type String Description Action performed by the callout. Possible Values - query - upsert - delete | | ENTITY | Type String Description Name of the external object being accessed. Example Order | | EVENT\_TYPE | Type String Description Type of event. Value is always ExternalCustomApexCallout. | | EXECUTE\_MS | Type Number Description How long it took (in milliseconds) for Salesforce to prepare and execute the query. Available in API version 42.0 and later. Example 102 | | FETCH\_MS | Type Number Description How long it took (in milliseconds) to retrieve the query results from the external system. Available in API version 42.0 and later. Example 607 | | FILTER | Type Text Description Field expressions to filter which rows to return. Corresponds to WHERE in SOQL queries. Example Filter:\[columnName=CustomerID, columnValue=537, subfilters=null, tableName=Order, type=EQUALS\] | | LIMIT | Type Number Description Maximum number of rows to return for a query. Corresponds to LIMIT in SOQL queries. Example 200 | | MESSAGE | Type String Description Error or warning message associated with the failed call. Example System.UnexpectedException: Query is either selecting too many fields or the filter conditions are too complicated | | OFFSET | Type Number Description Number of rows to skip when paging through a result set. Corresponds to OFFSET in SOQL queries. Example 0 (default) | | ORDERBY | Type String Description Field or column to use for sorting query results, and whether to sort the results in ascending (default) or descending order. Corresponds to ORDER BY in SOQL queries. Examples (Order:\[columnName=OrderDate, direction=ASCENDING, tableName=Order\]) | | ORGANIZATION\_ID | Type Id Description 15-character ID of the organization. Example 00D000000000123 | | REQUEST\_ID | Type String Description Unique ID of a transaction. A transaction can contain one or more events. All events in a transaction have the same REQUEST\_ID. Example 4A13-HSKv3CKs-0FKfceaV | | ROWS | Type Number Description Total number of records in the result set. The value is always -1 if the custom adapter’s DataSource.Provider class doesn’t declare the QUERY\_TOTAL\_SIZE capability. Example 200 | | ROWS\_FETCHED | Type Number Description Number of rows fetched by the callout. Available in API version 42.0 and later. Example 200 | | SELECT | Type String Description Comma-separated list of fields being queried. Corresponds to SELECT in SOQL queries. Example (ColumnSelection:\[aggregation=NONE, columnName=Name, tableName=Order\], ColumnSelection:\[aggregation=NONE, columnName=CustomerID, tableName=Order\], ColumnSelection:\[aggregation=NONE, columnName=OrderDate, tableName=Order\]) | | STATUS | Type Boolean Description Whether the query was successful. Possible Values - 1—Success - 0—Failed - Empty—Failed with no logged status or message | | THROUGHPUT | Type Number Description Number of records retrieved in one second. Example 302.57 | | TIMESTAMP | Type String Description The access time of Salesforce services in GMT. For example: 20130715233322.670. | | SUBQUERIES | Type Number Description Reserved for future use. | | 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. | | TOTAL\_MS | Type Number Description How long it took (in milliseconds) to prepare and execute the query and to retrieve the query results. Example 709 | | USER\_ID | Type Id Description 15-character ID of the user accessing the external system. Example 00530000009M943 | #### 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.")