SAP Message RQ281 - &1 individual records are missing - read long text

Diagnosis
V1 memo record could not be created, since a non-working period ofover a week is defined in the calender. Because of this non-workingperiod, the program is not in the position to calculate useful planningdates for the subsequent memo records.
The last memo record created has the planning date &V2&.

Procedure
Please maintain the missing &V1& memo records manually in the system.