QB Issue Resolution:

I would try a rebuild.

File menu > utilities > rebuild

File menu > utilities > rebuild

Resolution for Issue 'Is there another way to fix the following error message: Quickbooks has detected that one of your items does not have an account associated with it?' available: Yes (Solved).
Source: Intuit Community forum.

Is there another way to fix the following error message: Quickbooks has detected that one of your items does not have an account associated with it?: 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 account associated
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Error Recovery for account associated [Canada]
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