QB Issue Resolution:
You need to just use the Item detail section. Account detail is to be used only if there are expenditure accounts involved, say Broadband Expenses.
Resolution for Issue 'If i enter purchases itemised of NON INVENTORY products , do i use both columns of bill entry or just ITEMS' available: Yes (Solved).
Source: Intuit Community forum.
If i enter purchases itemised of NON INVENTORY products , do i use both columns of bill entry or just ITEMS: 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 accounts involved
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Error Recovery for accounts involved [Canada]
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