QB Issue Resolution:
Write the check from your bank account and use the AR account as the account.
Then create or edit the payment transaction and select the refund check to apply it to.
Resolution for Issue 'Refund Entire Check' available: Yes (Solved).
Source: Intuit Community forum.
Refund Entire Check: 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 Payment
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Error Recovery for Payment [Canada]
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