If Invoice is being cancelled using Credit note then please take exact amounts of original bill using CT downloaded excel of original GSTR1
Remember: Amendment allowed only within the GSTR1 Return filing period
After Uploading - Check for error status from Winman Software only - Dont correct errors online Directly
In case you have already corrected online - then you will need to create Dummy file and re-download the data to correct the same
download Excel File manually not possible because only Json can be donwload
(no excel option given by dept)but Winman does not allow import of ALREADY downloaded Json File yet. Winamn allows Downlaod and import both not only import. and import in software (Excel Not possible for GSTR1)-therefore use only Winman for correcting the errors
Manual Json download like this Login - File Returns - selet month - download- request for file o f Json - after 20 minutes click on request - below it link will then appear to download JSON File. Dont do manually
Imported files will be in Pale yellow colour in Winman software
How to change B2c to B2B see Winman help on B2C...add new invoice in B2B and reduce teh invoice amount from B2C