Error Description : This error occurs when IRN is already generated and the user is trying to repush the invoice for generation.
Resolution : You can identify if the invoice is available in E-INV section or you can download the INV from irp portal
Steps to correct the error :
After logging in to portal go to E-Invoice section and search the Doc number in DOC# filter
If the IRN data is not available go to E-Invoice action function after selecting the location >>download E-Invoice >>select the option as per your desired requirement and download
Note: you will be able to download data of 48 hrs only , after that the data will be removed from GOV side