QB Issue Resolution:
Let me get the help you need about your Square transactions.
In your case, since only one transaction was not imported, I’d suggest creating it manually to eliminate possible duplicate transactions.
You can either enter transactions directly via the Bank Register or enter it with a specific transaction form.
Here’s a great resource that you can check on for more detailed steps: Add transactions to bank register.
Resolution for Issue 'A single cash transaction did not import from Square into Quickbooks' available: Yes (Solved).
Source: Intuit Community forum.
A single cash transaction did not import from Square into Quickbooks: 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 bank register
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Error Recovery for bank register [Canada]
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