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A flat format is more suitable for low-level implementation like PLCs or software code. JSON is better for sharing extensive messages. Both are valid in TIC 4.0.
Message Validation
It is a process to check if the message complies TIC4.0 schema. The validations are made based on a JSON Schema. The schema doesn't limit the content to TIC 4.0, but if the attribute is a TIC 4.0 attribute the Schema will check if the format is TIC 4.0.
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