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CONCENTRATION OF CREDIT RISK | 6 Months Ended
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Sep. 30, 2021
CONCENTRATION OF CREDIT RISK |
CONCENTRATION OF CREDIT RISK | NOTE 8 - CONCENTRATION OF CREDIT RISK We maintain bank account balances, which, at times, may exceed insured limits. We have not experienced any losses with these accounts and believe that we are not exposed to any significant credit risk on cash. At September 30, 2021, there were trade accounts receivable balances outstanding from three customers comprising 74% of the total trade receivables balance. The following table sets forth information as to trade accounts receivable from customers who accounted for more than 10% of our accounts receivable balance as of: ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | September 30, 2021 | ​ | March 31, 2021 |
Customer |  | Amount |  | Percent |  | Amount |  | Percent |
A | ​ | $ | 1,079,264 | ​ | 41 | % | $ | * | ​ | * | %
B | ​ | $ | * |  | * | % | $ | 399,692 |  | 66 | %
C | ​ | $ | 576,640 |  | 22 | % | $ | 193,368 |  | 32 | %
D | ​ | $ | 290,503 | ​ | 11 | % | $ | * | ​ | * | %
* less than 10% of total

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- Definition The entire disclosure for any concentrations existing at the date of the financial statements that make an entity vulnerable to a reasonably possible, near-term, severe impact. This disclosure informs financial statement users about the general nature of the risk associated with the concentration, and may indicate the percentage of concentration risk as of the balance sheet date. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 275 -URI http://asc.fasb.org/topic&trid=2134479 + Details
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