SAP Message 5D801 - A new statement period starts

Diagnosis
A new statement period is created automatically because one of the
following has occured:
The employee's
- liability to tax
- tax card
- legal person
has changed, or if the employee has rejoined the company mid-year.
A seperate income tax statement must be created for this new statement
period.

System Response
The number of the statement period is increased, with regard to theprevious record, by 1.