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I am getting the error “Invalid Command” or “Try again” on NUUP?

It may happen due to below issues:

  1. Please check if your mobile operator is providing this service. You can get the list of the operators on NUUP by visiting Telecom operator.
  2. If your mobile operator is in the list on NPCI website, the error may be due to a network issue in your area. You can try initiating the transaction after sometime. In case the issue persists, please check with your mobile operator.