Large Format Printers are IoT devices that send data to the cloud on event basis. The type of data sending is, for example, the total ink consumed by the printer up to this day or information about the cartridges. Data is sent based on a data schema. Data schemas are a common interface for communication between printer and cloud data platforms. Printer could be operating under certain modes not supported by the schema. This causes data schema validation to fail, provoking data quality issues. The solution proposed creates a second schema, tagging the files which do not have the minimum required fields and storing its file version. Using this feature, printer can request to send a specific schema version ensuring correct data is sent. Therefore, if printer sends data files with issues causing a schema failure, this will be detected, and printer will retry data sending with another schema until validation pass.
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INC, HP, "ROBUST DATA SENDING IN PRINTER TELEMETRY", Technical Disclosure Commons, (April 22, 2022)