What is UUId and Id?

Question

What is the difference between UUID And Id?

chandu · Answer

Local ID 
Number value by which an Appian object (such as documents, knowledge centers, groups, and users) is referenced on an Appian server. Unlike UUIDs, the local ID may change from one Appian server to another. 
 
Universally Unique Identifier (UUID) 
String of 32 hexadecimal digits assigned to an Appian object when it is created. This internal (hidden) property is not editable or configurable. When migrating, UUIDs are also assigned to existing objects. UUIDs are used when importing an application to determine whether or not (regardless of the object's name or Local ID) a certain Appian object already exists. If an existing object is found, the import process updates the existing object, rather than creating a new one on the target system. 
 
Every appian artifact has a Loca Id and UUID. 
Lets say you have a constant in the Environment DEV and has 
Id:131 
UUID:_a-0000dee4-8f57-8000-3457-01ef9001ef90_2806 
 
So if you import this object to other environment UAT then the ID might change but the UUID will be the same as above 
 
Id:2456 
UUID:_a-0000dee4-8f57-8000-3457-01ef9001ef90_2806 
 
Like wise the UUID will be unique across all the environments and Id might change from one environment to other environment. 
 
Hope you understand the differences.

Singh002 · Answer

In simple words one can say that Id of any obj is unique to single environment . but UUID is unique to all environments till its life-cycle.

What is UUId and Id?

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