If you buying the business and owe the owner, then yes the amount borrowed is a liability, you pay down that liability a little at a time per your agrement

Resolution for 'amount borrowed issue: 'Can I set up payments to buy purchase the business ?' available: Yes.

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

For more information about resolving issues related to amount borrowed in Quickbooks/QBO or to get support for the issue 'Can I set up payments to buy purchase the business ?', click the link below: