gear>settings>chart of accounts

click the new button select bank as the type, name it cash, do not enable it for online download

Resolution for 'additional account issue: 'How do I add an additional account that is just cash?' available: Yes.

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

For more information about resolving issues related to additional account in Quickbooks/QBO or to get support for the issue 'How do I add an additional account that is just cash?', click the link below: