How correct bsr code number in 24q4 e-tds return?

Dear friends,

In filing of e-TDS return 24Q4 of FY 2018-19, I made an error in mentioning BSR code number for March month TDS challan in 24Q4 e-TDS return.

In Statement status it shows that "Processed with defaults".

When I am try to correct it on online, there is no option to edit BSR code.

When I try to download correction statement, it is telling that 1st need to correct mismatch of challan, then need to go for correction statement.

Please let me know the procedure to correct BSR code number in 24Q4 of FY 18-19.

Thanks and Regards,

Balu.