A bounded IMPORTRANGE reduces unnecessary transfer and makes the intended source population easier to inspect. It does not reduce the authorization scope granted to destination editors.
Specify the file and tab explicitly
Store the approved source spreadsheet URL in E1, then use a formula such as =IMPORTRANGE(E1,"'Monthly Sales'!A1:D200"). The quoted tab name identifies the intended sheet and the coordinates identify the imported block.
Without an explicit sheet name, the documented default uses the first source sheet. That can become confusing after tabs are rearranged, so state the intended source clearly.
Choose a useful range boundary
Include necessary headers and records while excluding unrelated columns and thousands of unused rows. If only a summary is needed, calculate an approved summary at the source and import that result instead.
A fixed boundary needs maintenance as data grows. Test the normal append workflow and document how the last included row will be updated or monitored. A smaller range is not useful if it silently omits new transactions.
Verify the data and audience
Compare the first and last expected records and any totals used for reconciliation. Check that the output area can expand without overwriting existing content.
Review the destination’s editors before authorizing the connection: Google allows those editors to import other source ranges after access is granted. Use a separately permissioned export file when only a subset may be shared. Keep the source URL and purpose documented, and review downstream reports separately so a repaired import does not leave a chart pointing at an old or incomplete destination range.
References
Reviewed against the linked official product guidance on November 3, 2026. Features, limits, screen labels, and access can vary by account, platform, region, and organization policy.