Not an option in QB
there is an outside third party utility, ccrqbom, which will report on where used for items in an assembly, as well as other things (I am not affiliated)
Resolution for 'assembly item issue: 'export group or assembly item components' available: Yes.
The assembly item 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 assembly item issue yourself by looking for a resolution described in the article. If it is a complex assembly item issue or you are unable to solve the issue, you may contact us by clicking here or by using other assembly item support options.
For more information about resolving issues related to assembly item in Quickbooks/QBO or to get support for the issue 'export group or assembly item components', click the link below: