Follow the below:
Go to Consolidated Group Losses schedule, Item 4 Transferred tax losses deducted.
Check if the Transferor TFN is missing.
Enter the missing Transferor TFN,
Pre-lodge the return.
Tax Australia: Error: CMN.ATO.GEN.XBRL01 in a company return
The message did not pass XBRL validation. Invalid context entity identifier (identifier = {identifier}, context id = {contextId})</tns:Detailed.Description><tns:Parameters><tns:Parameter>