Create a Data-Source Scoping Filter
A data-source filter selects among the data sources your organization has set up. In top-down scoping, which begins with all roles from all data sources selected, the filter excludes all roles from the data sources it doesn't select.
For bottom-up scoping, a data-source filter does the same, although in this case it's not needed. Bottom-up scoping requires access-point and entitlement filters that select roles from specified data sources, and other data sources are excluded simply because their roles are not selected. You may add a data-source filter as a "housekeeping" step, to remove values for unused data sources from list fields in which they would otherwise be displayed. But be careful: You can't submit your scoping filters if a data-source filter selects a data source from which no access-point or entitlement filter selects roles.
A data-source filter uses "matches any of" (or "matches none of") logic, so you would typically create a single filter and add to it the data sources that define your selection.
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Click the Add button in the Scoping Filters region. A row appears.
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In the Object field of that row, select Data Source.
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In an Attribute field, select Data Source Name.
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In a Condition field, select Matches any of or Matches none of to select data sources whose names match one of any number of values you select, or match none of them.
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In a Values field, select a data-source name. Then, for each data source you want to add to the filter, click an Add another value link and select from the list it presents.