Supplementary invoice ?

Supplementary Invoices :
It's based on Invoice Format. Also including all invoice related details.
Supplementary tax invoice has to be issued by taxable person in case where any "deficiency is found in a TAX* invoice" already issued by a taxable person. Simply said "It's based on goods Supplies as per Tax Invoice"...

Debit / Credit Note :
Some times these are issued only value. It means without taxable document...

Sir.,
But, In case will give only debit note then what's the exact solution...?

Supplementary Invoice was a concept in Excise and Cenvat credit rules. It had the same effect as of debit note.
The provision in CGST ACT is just clarificatory that debit notes prescribed in the CGST Act will include supplementary invoice.