In ServiceNow, asys_idis aunique 32-character identifier(UUID - Universally Unique Identifier) that is automatically assigned to every record in the system.
It isa unique 32-character alphanumeric string(e.g.,5137153cc611227c000bbd1bd8cd2005).
Every record in every table in ServiceNow has asys_idfield.
Thesys_id remains the same across instances if the record is transferred via an Update Set.
It helpsuniquely identifyrecords and is used in scripting, APIs, and database relationships.
In theIncident [incident]table, an incident record might have:
Number:INC0012345
sys_id:9d72f6141b122200d37a85e15b2d6fe6
Key Characteristics of sys_id:Example:
Thesys_id is always 32 characters long.
It is acritical part of the ServiceNow database structure.
Used forrelationships, APIs, scripting, and querying records.
Why "A. Unique 32-character identifier that is assigned to every record" is Correct?
B. A client-side Business Rule – Incorrect
Business Rulesdo not generate sys_ids; they control logic execution.
C. A server-side Business Rule – Incorrect
Business Rules are used for automation, but sys_id is a system-generated field.
D. Unique 64-character identifier that is assigned to every record – Incorrect
The correct length of sys_id is32 characters, not 64.
Explanation of Incorrect Options:
ServiceNow Docs: Understanding sys_id
ServiceNow CSA Study Guide – Database Architecture
ServiceNow Product Documentation: Unique Identifiers in ServiceNow
References from Certified System Administrator (CSA) Documentation:
