Salesforce Record IDs (15 vs. 18 Digits)?

Every Salesforce record has a unique Record ID assigned at creation. These IDs are used across the system for referencing and operations.

15-Digit Record ID: Visible in the URL when viewing a record via the User Interface, Case-sensitive, Commonly used in UI.

18-Digit Record ID: Used in APIs (e.g., Data Loader), Same as the 15-digit ID with 3 extra characters for case-insensitivity.