To unmap a system table
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1.
Select Settings > Campaign Settings.
The Campaign Settings page opens, presenting links for various administration tasks.
2.
In the Data Source Operations section, click Manage Table Mappings.
The Table Mappings window opens.
3.
Select Show System Tables.
4.
Select the table to unmap in the Unica system table list, then click Unmap Table.
You are prompted to confirm the unmapping.
You should immediately remap the system table or be sure that it does not need to be mapped in your environment.
To unmap the segment membership table