QB Issue Resolution:

To add the deposits without the corresponding debits, you must select the deposit and ensure to select Not Match under the Action‘s drop-down arrow. Once done, fill in or select the required information and select on Quick Add.

 

You can see attached screenshots for additional reference.

a3 not a match 1.PNG

a3 quick add....PNG

Resolution for Issue 'Double entry' available: Yes (Solved).
Source: Intuit Community forum.

Double entry: 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.

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