A: Generic drug document: After the upstream enterprise uploads the outbound document 10, but the downstream enterprise does not upload it to the warehouse, it will send an early warning message to both parties. The downstream enterprises will supplement the incoming and outgoing documents within 20 days after the early warning is triggered, and the early warning will be eliminated. If it is more than 20 days, the early warning of the supplementary documents cannot be automatically processed, and it can only be handled by the food and drug administration to which the enterprise belongs. Special drug document: If the expected arrival time set by the upstream enterprise is exceeded and the downstream enterprise fails to upload the receipt document, an early warning message will be sent to both parties. If the downstream enterprise uploads the documents within (estimated arrival time +20 days), the warning will be automatically eliminated. If the documents are re-transmitted after this time, the warning cannot be automatically processed, and it can only be handled by the food and drug administration to which the enterprise belongs.