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Defining the Header Structure 
1. Start transaction merep_sbuilder.
2. Enter the SyncBO ID.
3.
Choose
Edit.
Alternatively, you can choose
Mapping and go to the SyncBO Builder:Mapping
Setting screen by double-clicking on one of the red texts Import or
Tables under the GetList BAPI wrapper name.
Then choose
Display
<-> Change.
4. On the Tables tab page, select Map for the line that defines the client view of the header structure.
5. Perform the steps described in Defining the Use of Default Values to map a Value ID for the selection criteria on the Import tab page.
6. On the Tables tab page, select Filter to define a maximum of three fields for filtering.
7. On the Tables tab page, select Key to define the R/3 key fields.
8. Perform the steps described in Defining SyncBO Relationships to define any fields that contain a key field value of another SyncBO on the Tables tab page.

You can display the client view of the SyncBO (metadata) in the initial screen of the SyncBO Builder when the mapping process has been completed.
