| Series A1 PTC | -- | -- | Provisional [ICRA]A- (SO) | -- |
| Non-Convertible Debenture | -- | -- | [ICRA]A(Stable) | -- |
| Series A1 PTC | -- | -- | Withdrawn | -- |
| Series A1 PTC | -- | -- | Withdrawn | -- |
| Series A2 PTC | -- | -- | Withdrawn | -- |
| Series A1 PTC | -- | -- | Withdrawn | -- |
| Series A1(b) PTC | -- | -- | Withdrawn | -- |
| Series A1 PTC | -- | -- | Withdrawn | -- |
| Series A1 PTC | -- | -- | Withdrawn | -- |
| Series A1 PTC | -- | -- | Withdrawn | -- |