Users may notice that the System Record ID is different from the Constituent ID on constituent records. The System Record ID is automatically generated by the program when a record is added to the database and cannot be edited by the user.
The System Record ID does not have to match the Constituent ID (although a user can specify the System Record ID when importing a new record or by change the Constituent ID after the record has been saved to match the automatically generated System Record ID). Each record must have a unique value in the database. The Constituent ID can be reused after a constituent is deleted from the database but the System Record ID can never be reused.