008D8EEA You cannot store a duplicate value in an RMS key field
    that doesn't allow duplicates.

    Explanation:

    Some fields that areRMS keys are defined so that it is not
    possible to have two records with the same value stored in that
    field.

    User Action:

    If you made a mistake in entering data at a *.prompt, then retype
    the query and enter the proper data. You can find out which
    fields are keys by entering a SHOW FIELDS command.