Revision of TDS Return
In order to use this new T code FIWTIN_QRETURNS, you have to implement note 1830832. Refer this note and check for the prerequisites as per the support pack of your system.
with this new T code we get 26Q, 27Q and 27EQ in text file each ( in encrypted format which is supposed to be uploaded with NSDL website) and 3 excel files each which gives you the deductee details, challan details and dedcutor details.
As far as tax amount correction is concerned, you can use T code J1INJV for this. Assign TDS payable GL in the configuration for Journal Voucher in field JV loss.Adjustment entries will then be posted to TDS payable GLs and can be adjusted in next challan. However, in order to pass adjustment entry against any invoice, that invoice needs to be cleared (paid).
Corrections like PAN details or TAN number etc. can be executed in system. Once all the details are corrected, you can execute T code FIWTIN_QRETURNS again for the same period. This will generate all the files again with corrected data.
However, we can not upload any external file into the system and then made corrections in SAP.
Hope this helps.