Key note we must keep in mind

Write access is only possible via BP and CVI APIs -> Unidirectional replication from BP to customer/vendor
When we debug BP synchronization code, we can know that the trigger point is FM call MDS_BUPA_OUTBOUND. So if we can find a way to suppress the call of this FM, we can then deactivate BP synchronization in S/4 system.

Through debugging we can know the content of internal table in line 26, variable gs_event-bpout_bupx come from C table below:

use tcode SM30, enter this table name:

find customizing activity:

Do not select this checkbox:

test

Test whether synchronization is deactivated. Now I change first name from Jerry2 to Jerry234 and save.

In BUT000 value is changed.

In customer table KNA1, the name is unchanged. Deactivation works.

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