Period Units in Updating: Inventory Controlling 

In addition to the type of update, you can also define the period units that are used in the updating process.

The period unit specifies the intervals in which the statistical data is to be cumulated. You can choose from the following periods:

In Inventory Controlling, the standard SAP setting for the period unit is ‘month’ for updating to the information structures S031 and S034, and ‘day’ for the information structure S033. In the standard system, information structure S039 and information structure S031 both have the period unit ‘month’. No actual data is written to S039, as this information structure provides the basis for planning.

The standard setting for the information structure S033 cannot be altered. For information about updating the information structure S094, please refer to Updating for Standard Analyses: Requirement/Stock and Parameters Controlling

The standard setting for the Warehouse Management information structures S090 and S091 is ‘month’. For reasons of performance, updating does not take place continually and must be initialized in Customizing for the Logistics Information System.

The prerequisite for changing the period unit is that no actual data has been updated to the information structure.

You can set the period unit for the standard information structures in Customizing for the Logistics Information System (exception: information structure S033).