JE means you are making More entries. To Delete entries, you just delete them. You also can Undo  the last reconciliation.

Resolution for 'actually duplicate transactions issue: 'We accidentally reconciled a sub credit card account that is actually duplicate transactions. I identified them but how do I delete the duplicate charges?' available: Yes.

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

For more information about resolving issues related to actually duplicate transactions in Quickbooks/QBO or to get support for the issue 'We accidentally reconciled a sub credit card account that is actually duplicate transactions. I identified them but how do I delete the duplicate charges?', click the link below: