SubjectKey

Attribute of the SubjectData element, used to identify a subject. Specify one of the following:

GUID—Unique, unchanging string identifier for a subject in a study. The GUID must be a Unicode string that uses fewer than 255 bytes in the database UTF-8 character set.
- For an existing subject, use the subject GUID that exists in the InForm database.
- For a new subject, specify a GUID to use for the subject.
Subject Number—Subject number that appears in the InForm user interface to identify an enrolled subject. You can only specify a SubjectNumber for the SubjectKey attribute if you are entering data for an existing subject.
Note: Ensure that you specify the current Subject Number for the subject.