QB Issue Resolution:
a vendor invoice is your bill, you invoice your customers, it helps if we all refer the things the same way
you must have a vendor name to enter a bill, the rest of the vendor information on the vendor set up screen is optional
many of us use a generic vendor for things like meals, fuel, lodging, etc
You only need to enter a bill if you are going to pay it in the future, otherwise just record the payment
Resolution for Issue 'How can I add my contractor invoice?' available: Yes (Solved).
Source: Intuit Community forum.
How can I add my contractor invoice?: 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 contractor invoice
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Error Recovery for contractor invoice [Canada]
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