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CONCENTRATION OF CREDIT RISK (Details) | 6 Months Ended | 12 Months Ended
--- | --- | ---
Sep. 30, 2021 USD ($) | Mar. 31, 2021 USD ($)
Concentration of credit risk and major customers |  |
Accounts receivable | $ 2,649,309 | $ 608,059
Accounts Receivable | Customer Concentration Risk | Customer A |  |
Concentration of credit risk and major customers |  |
Accounts receivable | $ 1,079,264 |
Concentration risk percentage | 41.00% |
Accounts Receivable | Customer Concentration Risk | Customer B |  |
Concentration of credit risk and major customers |  |
Accounts receivable |  | $ 399,692
Concentration risk percentage |  | 66.00%
Accounts Receivable | Customer Concentration Risk | Customer C |  |
Concentration of credit risk and major customers |  |
Accounts receivable | $ 576,640 | $ 193,368
Concentration risk percentage | 22.00% | 32.00%
Accounts Receivable | Customer Concentration Risk | Customer D |  |
Concentration of credit risk and major customers |  |
Accounts receivable | $ 290,503 |
Concentration risk percentage | 11.00% |
Accounts Receivable | Customer Concentration Risk | Customers |  |
Concentration of credit risk and major customers |  |
Concentration risk percentage | 10.00% |
Trade Receivables |  |
Concentration of credit risk and major customers |  |
Number of significant customers | 3 |
Trade Receivables | Customer Concentration Risk | Customer A,C,D |  |
Concentration of credit risk and major customers |  |
Concentration risk percentage | 74.00% |

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