QB Issue Resolution:

Review the course guide / training materials again and watch how they get to it. (Hint — look under the File menu for starters). 🙂

Resolution for Issue 'Where do I find the “Clean Up Company Data” window?' available: Yes (Solved).
Source: Intuit Community forum.

Where do I find the “Clean Up Company Data” window?: this issue or error code is a known issue in Quickbooks Online (QBO) and/or Quickbooks. Support for this issue is available either by self-service or paid support options. Experts are available to resolve your Quickbooks issue to ensure minimal downtime and continue running your business. First try to resolve the issue yourself by looking for a resolution described below. If it is a complex issue or you are unable to solve the issue, you may contact us by clicking here or by using other support options.

Support for Company
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Error Recovery for Company [Canada]
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