SAP Message >REP099 - Not possible to lock the interval from &1 to &2

Diagnosis
You specified that the items should be locked while the evaluation isbeing run. The system was not able to lock the interval from &V1& toV2 for clearing or clearing resets, even after multiple attempts.

System Response
The report provides a list of open items.
If clearing or clearing resets were made while the report was being run,then the report may contain errors.