Have you checked for the agency name under your vendors? You should be able to edit there.
Resolution for 'agency name issue: 'how to edit sales tax agency name' available: Yes.
The agency name 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 agency name issue yourself by looking for a resolution described in the article. If it is a complex agency name issue or you are unable to solve the issue, you may contact us by clicking here or by using other agency name support options.
For more information about resolving issues related to agency name in Quickbooks/QBO or to get support for the issue 'how to edit sales tax agency name', click the link below: