that happens when you use the bank acct. in the transaction for both sides of the transaction (usually done with an item improperly set up).  https://www.artesanibookkeeping.com/income-not-showing-income-quickbooks/

Resolution for 'both credits issue: 'My cash deposits for the last 2 days that are imported from our bank are showing as both credits AND debits on our bank register?' available: Yes.

The both credits 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 both credits issue yourself by looking for a resolution described in the article. If it is a complex both credits issue or you are unable to solve the issue, you may contact us by clicking here or by using other both credits support options.

For more information about resolving issues related to both credits in Quickbooks/QBO or to get support for the issue 'My cash deposits for the last 2 days that are imported from our bank are showing as both credits AND debits on our bank register?', click the link below: