External ID is a native Dynamic Application field that can be used as a reference identifier for the application in another, external system.
Note: Compare with Workspace External ID.
When a dynamic application is created in PPM, the External ID field is blank.
If the application is linked to an external system (outside of PPM), the External ID may be programmatically updated with a value from the external system (it does not have to be updated).
In PPM, a project manager or administrator can create a dynamic application and set the External ID. If the field contains a value (it is not blank), that value must be unique within an enterprise.
If dynamic application External ID has been set, either programmatically or from within PPM, the current value displays.
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