# data_quality Schema ```txt https://covid19.admin.ch#/definitions/VirusVariantsDailyIncomingData/properties/data_quality ``` Indicates if the quality and quantity of the available data lends itself to calculate a reasonable percentage of variants of concern. In general the characterisation of variants before 30.01 was not widely enough established or digitally reported to BAG (i.e. negative results were not reported). | Abstract | Extensible | Status | Identifiable | Custom Properties | Additional Properties | Access Restrictions | Defined In | | :------------------ | ---------- | -------------- | ----------------------- | :---------------- | --------------------- | ------------------- | ----------------------------------------------------------------------------- | | Can be instantiated | No | Unknown status | Unknown identifiability | Forbidden | Allowed | none | [sources.schema.json\*](../schema/sources.schema.json "open original schema") | ## data_quality Type `string` ([data_quality](sources-definitions-virusvariantsdailyincomingdata-properties-data_quality.md)) ## data_quality Constraints **enum**: the value of this property must be equal to one of the following values: | Value | Explanation | | :--------------- | ----------- | | `"insufficient"` | | | `"sufficient"` | |