About System Fields

In addition to the fields that you define manually for each family, each record that you create will also contain system fields.

System fields:

Are identified by a field ID (i.e., you cannot define a field caption for them).
Are managed automatically as you perform actions within the GE Digital APM system.
Cannot be modified or configured in the same way that family fields can be managed or configured (e.g., you cannot defined custom rules for them).
Do not appear in many of the places where family fields appear (e.g., on datasheets).
Can be included in queries.
Are referenced throughout the GE Digital APM product but in ways that most end users do not see (e.g., in rules and in URLs).

The following table provides a list and description of the system fields that exist for every record.

Field ID	Description	Behavior or Usage
CONTENT_GUID	A global unique identifier that uniquely identifies a record across all databases.	This field is populated automatically with a system-generated value when a record is instantiated (i.e., when you initiate the record-creation process). Note that if you include this field in a query, when you run the query, values will not be displayed in the CONTENT_GUID column.
ENTY_CAPTION_TX	A field that stores a copy of the Record ID.	This field is updated when the ENTY_ID field is updated.
ENTY_ID	A value that uniquely identifies a record within a given database.	This field is populated automatically with a system-generated value the first time a record is saved. The ENTY_KEY field is widely using within URLs to provide a means for giving you direct access to the information associated with a specific entity.
FMLY_KEY	A value that identifies the family to which a record belongs.	This field is populated automatically when a record is first saved with the unique key value that identifies a family within a database.
LAST_UPBY_SEUS_KEY	A value that identifies the user who last updated the record.	This field is updated automatically whenever a record is modified.
LAST_UPDT_DT	A value that identifies the date that a record was last updated.	This field is updated automatically whenever a record is modified.
LOCK_SEQ_NBR	A value is internally by the GE Digital APM system to indicate how many times a record has been modified.	This field is updated every time a record is modified.