QB Issue Resolution:

The item you use on the invoice or sales receipt determines what income account is posted to

edit your item and choose the income account you want

Resolution for Issue 'How can one allocate cost/revenue codes to items do get a proper P&L view for specific services?' available: Yes (Solved).
Source: Intuit Community forum.

How can one allocate cost/revenue codes to items do get a proper P&L view for specific services?: 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 income account
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Error Recovery for income account [Canada]
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