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Element

Data Type

Required?

Default

Description

Sample Data

ExternalSystemIdentifier

String (50)

On Insert: Yes (if ProjectTaskUid is not supplied)

On Update: Yes (if ProjectTaskUid is not supplied)


The external system identifier is a unique identifier for a project task (may be null, but once set can only be updated to a different, non-null value)

ESI-123

ProjectTaskId

Int32

On Insert: No

On Update: No


The project task Id is a unique identifier for a project task. For internal use only.


ProjectTaskUid

Int64

On Insert: Yes (if ExternalSystemIdentifier is not supplied)

On Update: Yes (if ExternalSystemIdentifier is not supplied)


The project task Uid is a A unique and immutable identifier for a project task

1152921504608637358

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