Why saved set userID is needed?
61490
What's the purpose of each of the different UIDs a process can have?
16576
@Id @GeneratedValue but set own ID value
124496
Database.SaveResult.getId() returns null
152263
What are the drawbacks with using UUID or GUID as a primary key?
156982
How to restore/add previous user account
9712
Understanding core IDs
78099
How can I mount a filesystem, mapping userids?
110539
whatId when using custom object
1786
How to create a GUID / UUID
64362
Storing data / session for anonymous user
20058
Mounting filesystem with special user id set
148899
Is there an option to create and Opt-in a user in the same API call?
52600
Use of Named Credentials seem to be tied to External Data Source
119457
Would it be better to encourage people to set a user name?
86885
Why do some users have username "user########"?
154624
Password Gets Reset when executing user_save
45067
How unique is UUID?