#USY987E: UNABLE TO PROCESS INFOGIX DATA BASE (HF). ERROR CODE = 23
The RECORDS specification in the JCL was set to 1006, but the same specification in ACR was set as 100,000. This yielded the error code 23 since ACR was unable to add new records for history database.
The issue was resolved after performing the steps in the "Performing a REORG in ACR/Summary via JCL" section of Using the REORG Utility in ACR to REORG a Database.