gear>settings>company settings>advanced>chart of accounts and turn on account numbers

then in the chart of accounts, you edit the account and enter the account number.  And use the list gear to show the account number in the listing

Resolution for 'BAS Expense issue: 'How do I assign account numbers to system accounts such as BAS Expense and BAS Suspense?' available: Yes.

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

For more information about resolving issues related to BAS Expense in Quickbooks/QBO or to get support for the issue 'How do I assign account numbers to system accounts such as BAS Expense and BAS Suspense?', click the link below: