Diagnosis
Activating/deactivating the business partner shadowtable is critical in certain situations and should be consideredcarefully.

Procedure
Activating the shadow table:
If there are no business partners in the system, you can activate thetable without carrying out any further steps.
If, on the other hand, there is already business partner master data inthe system, then you should initialize the business partner shadow tablewith the mass activity GPSHAD_NEW.
Deactivating the shadow table:
There are no particular steps necessary for deactivating use of thebusiness partner shadow table. You should, however,be aware that subsequent activation may be associated with a largeamount of work (if there is already a large amount of business partnermaster data in the system) (mass activity GPSHAD_NEW and that ifyou do not initialize the table then obsolete business partner data willbe included in the processing.

Note
You should make sure that you make a decision about using the businesspartner shadow table before production startup and initialize the tablecorrectly before a production startup.
We would advise you strongly against subsequent activation or evendeactivation followed by later reactivation.