The error code CMN.ATO.INCDTLS.000428 indicates that there is a validation issue within the income details section of the tax return. Specifically, it suggests that certain required fields or data entries are either incomplete, missing, or contain invalid data. This validation error frequently occurs when mandatory fields, such as income amounts, trust distributions, or other income-related entries, have not been fully populated or correctly entered according to the Australian Taxation Office (ATO) specifications.
To resolve this issue, it is essential to thoroughly review the income details schedule within the lodgement, ensuring that all mandatory fields are completed with valid data, including zeroes where applicable. Particular attention should be paid to income from trusts, managed funds, foreign income, and associated credits, verifying that each relevant field, especially those indicated with red or orange backgrounds, has been accurately filled.
