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Intangible assets (Tables) | 12 Months Ended
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Mar. 31, 2022
Disclosure Of Intangible Assets And Goodwill Explanatory [Abstract] |
Disclosure of detailed information about intangible assets [text block] | Intangible assets comprise the following:
|  | March 31, 202 2 |  |  | March 31, 20 21 |  |  | March 31, 2020 |
Goodwill |  |  | - |  |  |  | 14,595 |  |  |  | 14,595 |
Other intangible assets |  |  | 634,730 |  |  |  | 679,991 |  |  |  | 665,097 |
|  |  | 634,730 |  |  |  | 694,586 |  |  |  | 679,692 |
Disclosure of reconciliation of changes in goodwill [text block] | The following table presents the changes in goodwill during the years ended March 31, 2022 and 2021
|  | March 31, 202 2 |  |  | March 31, 202 1 |
Balance at the beginning of the year |  |  | 14,595 |  |  |  | 14,595 |
Effect of movement in exchange rates |  |  | - |  |  |  | - |
Impairment loss recognized during the year |  |  | (14,595 | ) |  |  | - |
Net carrying amount of goodwill |  |  | - |  |  |  | 14,595 |
Disclosure of detailed information about the intangible assets other than goodwill [Text Block] | The following table presents the changes in intangible assets during the years ended March 31, 2022, 2021 and 2020.
|  | Bandwidth Capacity |  |  | Software |  |  | License fees |  |  | Total |
(A) Cost |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Balance as of March 31, 2019 |  |  | 684,334 |  |  |  | 986,884 |  |  |  | 73,000 |  |  |  | 1,744,218 |
Acquisitions during the year |  |  | 52,054 |  |  |  | 283,844 |  |  |  | 5,000 |  |  |  | 340,898 |
Disposals during the year |  |  | - |  |  |  | - |  |  |  | - |  |  |  | - |
Balance as of March 31, 20 20 |  |  | 736,388 |  |  |  | 1,270,728 |  |  |  | 78,000 |  |  |  | 2,085,116 |
Acquisitions during the year |  |  | - |  |  |  | 307,506 |  |  |  | - |  |  |  | 307,506 |
Disposals during the year |  |  | - |  |  |  | - |  |  |  | - |  |  |  | - |
Balance as of March 31, 202 1 |  |  | 736,388 |  |  |  | 1,578,234 |  |  |  | 78,000 |  |  |  | 2,392,622 |
Acquisitions during the year |  |  | - |  |  |  | 325,471 |  |  |  | - |  |  |  | 325,471 |
Disposals during the year |  |  | - |  |  |  | - |  |  |  | - |  |  |  | - |
Balance as of March 31, 202 2 |  |  | 736,388 |  |  |  | 1,903,704 |  |  |  | 78,000 |  |  |  | 2,718,093 |
(B) Amortization |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Balance as of March 31, 2019 |  |  | 367,344 |  |  |  | 781,419 |  |  |  | 33,531 |  |  |  | 1,182,294 |
Amortization for the year |  |  | 70,869 |  |  |  | 163,248 |  |  |  | 3,608 |  |  |  | 237,725 |
Impairment loss on intangibles |  |  | - |  |  |  | - |  |  |  | - |  |  |  | - |
Balance as of March 31, 20 20 |  |  | 438,213 |  |  |  | 944,667 |  |  |  | 37,139 |  |  |  | 1,420,019 |
Amortization for the year |  |  | 74,482 |  |  |  | 214,980 |  |  |  | 3,150 |  |  |  | 292,612 |
Impairment loss on intangibles |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Balance as of March 31, 202 1 |  |  | 512,695 |  |  |  | 1,159,647 |  |  |  | 40,289 |  |  |  | 1,712,631 |
Amortization for the year |  |  | 74,483 |  |  |  | 293,299 |  |  |  | 3,150 |  |  |  | 370,932 |
Impairment loss on intangibles |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Balance as of March 31, 202 2 |  |  | 587,178 |  |  |  | 1,452,946 |  |  |  | 43,439 |  |  |  | 2,083,363 |
(C) Carrying amounts |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
As of March 31, 2020 |  |  | 298,175 |  |  |  | 326,061 |  |  |  | 40,861 |  |  |  | 665,097 |
As of March 31, 202 1 |  |  | 223,693 |  |  |  | 418,587 |  |  |  | 37,711 |  |  |  | 679,991 |
As of March 31, 202 2 |  |  | 149,210 |  |  |  | 450,958 |  |  |  | 34,561 |  |  |  | 634,730 |

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