This is a Basic List Management task. Open the Chart of Accounts and use View menu > Re-Sort List. Let QB put this in “original” order.

If you still have trouble, then use File menu > Utilities, Rebuild this file. This will relink everything.

Resolution for 'Account Errors issue: 'Sub Account Errors' available: Yes.

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

For more information about resolving issues related to Account Errors in Quickbooks/QBO or to get support for the issue 'Sub Account Errors', click the link below: