Hi Bel5,
I'm sorry to hear your STP reports have stopped sending after working for so long, especially with the ABN mismatch message and the extra time this has caused. There’s a Community post about the same error code, SBR.GEN.AUTH.006, which may be useful to compare: Payroll error SBR.GEN.AUTH.006. It covers checking the ABN in the STP settings, but it may not explain the mismatch in your file. As you’ve already confirmed your ATO details are set up, please contact our Support team so they can check the STP setup and ABN details for your business. Include the error message and mention that your accountant can send the update event successfully, but it’s rejected when you try. That should help the team investigate without sending you back through the same setup steps.
Regards,
Sai