This is typically done through editing the supplier details, however, there is actually a bug so the ABN field is missing (which is why you cant find it), The engineers are working on this and there will be a fix in place soon (ill post an update on this reply […]

Resolution for 'ABN field issue: 'Where do I add a Suppliers ABN so it appears in the Taxable payments report' available: Yes.

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

For more information about resolving issues related to ABN field in Quickbooks/QBO or to get support for the issue 'Where do I add a Suppliers ABN so it appears in the Taxable payments report', click the link below: