If the client is currently a Company Administrator, then you can transfer the Master Admin role to him.  So, if he is not, then you need to change his role to Comp. Admin.

If you are currently paying for his account via wholesale billing, he will be moved out (or you […]

Resolution for 'AFTER issue: 'I want to drop a client from my qboa and transfer his qbo to him so he can do his own bookkeeping' available: Yes.

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

For more information about resolving issues related to AFTER in Quickbooks/QBO or to get support for the issue 'I want to drop a client from my qboa and transfer his qbo to him so he can do his own bookkeeping', click the link below: