
Preparing Excel Integration
Prerequisites
You have already defined a planning layout.

If you want to make changes to your planning layout after it has been defined and an Excel template has been created, you can no longer use the existing Excel template. You have to create a new template.
Planning data that corresponds to your planning layout must exist in your SAP System before you can create a template Excel worksheet, for technical reasons. If planning data does not exist, you must create it (for example, by using the relevant layout to enter data without integrating Excel).
Procedure
Activating Excel
Use the following procedure to activate Excel:
Choose a manual planning variant for a planning layout. In maintenance for manual planning variants, mark the indicator Excel integration: this activates Excel as the interface for your planning session. When you start planning, the template defined in the planning layout is displayed in the Excel worksheet.
The file name for the manual planning variant is named automatically by the system when the data is stored.
You must define a suitable template before you can use a specific worksheet in planning.
Design an Excel Worksheet as a Template
Use
to open Excel within the SAP interface.
Note:
to select the data you wish to move. Choose
to place the data in the desired position. Choose
Save file name to save the data after it has been moved to its new position. 
Re-activate worksheet protection in Excel after processing so that only the data defined in the SAP System needs to be entered in future planning sessions.
Save Excel layout to save your Excel worksheet in the SAP System.
in the symbol bar. This function enables you to save the file name and the worksheet layout. Data is saved indefinitely.
. This takes you back to the default values. Delete the values that you entered for the variables if the values are not to be displayed as defaults for planning. Choose
.

Default values are only saved temporarily at this stage. Save the manual planning variants. The file names are assigned to the planning layouts only when the manual planning variants have been saved. The values for the variables are then saved.