Diagnosis
You have entered a posting period that doesn't correspond with theposting date entered.
Either you have entered a posting date or the system has determined itfrom the planned record (key date).

System Response
You cannot update the planned records or reverse posting records.

Procedure
You have the following options:
Do not enter a posting period or a fiscal year. The system will thendetermine the posting period and the fiscal year from the posting date.
In most posting systems it is only possible to enter a posting date fora special period in December. Post on 12/31 if you want to post in aspecial period (13 to 16), for example. For all other periods (01 to 12)the month in the posting date should correspond to the period.Forexample, if you want to post in period 03 you could enter the postingdate 03/31.