If you did a backup right before you hit the undo button, you can restore the backup. Otherwise, you will have to redo the bank rec over again.

Resolution for '151 items again issue: 'I accidentally clicked undo is there a way to go back so that I do not have to reconcile 151 items again' available: Yes.

The 151 items again 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 151 items again issue yourself by looking for a resolution described in the article. If it is a complex 151 items again issue or you are unable to solve the issue, you may contact us by clicking here or by using other 151 items again support options.

For more information about resolving issues related to 151 items again in Quickbooks/QBO or to get support for the issue 'I accidentally clicked undo is there a way to go back so that I do not have to reconcile 151 items again', click the link below: