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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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- Definition

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Amount, after allowance for credit loss, of right to consideration from customer for product sold and service rendered in normal course of business, classified as current.

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