Below is the advise from ATO for your reference:
Activity Statement errors for prefill or lodgment |
We’re aware of an issue affecting some taxpayers with an active account lock, such as a compromised indicator.
To lodge the activity statement, your client need to contact us so we can temporarily remove their account lock, allowing the statement to be lodged. |
NOTE:
- Tax Practitioner Assistance Line is 13 72 86, select fast Key codes 3, 2, 1 between 8.00am and 6.00pm, Monday to Friday, excluding public holidays.
- Individual Assistance Line is 13 28 61, select fast Keys 4, 3 between 8am to 6pm, Monday to Friday, excluding public holidays.
- Business Info Line is, 13 28 66, between 8am to 6pm, Monday to Friday, excluding public holidays.