ReasonCode type
The reason for the restriction. As of now this can be "QuotaId" or "NotAvailableForSubscription". "QuotaId" is set when the SKU has requiredQuotas parameter as the subscription does not belong to that quota. "NotAvailableForSubscription" is related to capacity at the datacenter.
KnownReasonCode can be used interchangeably with ReasonCode,
this enum contains the known values that the service supports.
Known values supported by the service
QuotaId: QuotaId
NotAvailableForSubscription: NotAvailableForSubscription
type ReasonCode = string