TIBCO Scribe® Online logs the activities for every execution of every Solution and displays those activities on the Execution History page for up to 45 days. The Pending column indicates the number of failed records in the selected execution that are available for reprocessing. You can choose Reprocess All from the Gear menu associated with an execution to reprocess failed records.

If you choose to  "Reprocess All" on a Solution execution where the reprocess job has record errors and ends with a fatal error, the Pending value for the reprocessed job is not set to 0. (D1887)

This is a display issue only and does not affect your data.