A manual subledger journal did not reverse. What could be the reason for this?

The "Create Accrual Reversal Accounting" process generates reversal journal entries only for transactions that are explicitly marked for reversal. When a manual subledger journal is created, the user must specify a reversal period or date in the designated field (e.g., "Reversal Period"). If this field is left null, the system has no instruction on when to reverse the journal. Consequently, the journal is not flagged for reversal, and the reversal process will ignore it, even if it runs successfully.

A. The next accounting period was future-enterable: A future-enterable period status allows for the creation of journal entries, so a reversal could be created in such a period. This status does not prevent reversal.
B. The Create Accrual Reversal Accounting process had run and completed with no errors: This indicates the process worked as designed, processing only eligible journals. The journal in question was simply not eligible.
C. The next accounting period was open: An open period is necessary for a reversal to be posted, but its status does not trigger the creation of the reversal itself.

1. Oracle Fusion Cloud Financials, Using Subledger Accounting, 23D, Chapter 5: Create Subledger Journals. "Reversing Journals: You can reverse a manual subledger journal entry by specifying a reversal period and reversal date... If you do not enter a reversal period, the journal entry is not reversed."