This issue most often occurs when the STP batch was successfully submitted to the ATO, but The ATO system failed to send a message back to state the STP batch is confirmed.
If this occurs:
Log on to the ATO Business Portal.
Check the payroll information for the erroring batch did come through and check the W1 and W2 amounts are correct in your electronic BAS. To check the STP prefill values, see: Check Single Touch Payroll Prefill values in the ATO portal electronic activity statement.
If everything is correct, you can mark the STP batch as no longer required in Single Touch Payroll by opening the batch, going to Options, Mark batch as not required.
If the information did NOT come through to the Electronic BAS, and the STP Prefill STP batch detail, you can manually update the totals by following the article below if needed. If this is the case, see: Electronic BAS prefilled total amount doesn’t match Single Touch Payroll amounts.