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Do you ever suppress or delete records from the OSTI.GOV? Is there a way to notify those who have downloaded the records that a title is no longer available?

Records are occasionally suppressed or deleted from OSTI.GOV for a variety of reasons.  When this happens, the record's PURL will return an error message.  The vast majority of the suppressed records will eventually be returned to OSTI.GOV with the same PURL.  OSTI does not have a mechanism for informing the public when records are suppressed or deleted.