SAP Message 62852 - A history record already exists for valid-from date &

Diagnosis
You have a valid-from date in the adjustment history which alreadyexists for an adjustment history record.

System Response
The system does not accept your entry.

Procedure
Enter a different valid-from date or delete the valid-from date and theamount, if necessary. To enter another record for this date, you mustchange the corresponding amount in the adjustment history, if possible.