QB Issue Resolution:
Run “Unbilled Charges” Report (from blue navigation bar on the left > select Reports > Go to report > type Unbilled Charges)
You will need to delete one at a time.
Double click to open original entry form > delete (or more > delete) located bottom middle)
Resolution for Issue 'In the upgrade system, how do I delete unbilled charges so I can make a customer inactive?' available: Yes (Solved).
Source: Intuit Community forum.
In the upgrade system, how do I delete unbilled charges so I can make a customer inactive?: 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 Customer
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