I was looking into this today and this was one of the top search results but doesn’t seem to explain it in any detail so here is what I found myself.
So, on a queue item you have the following properties:
- SpecificData (populated when the queue item is created)
- OutputData (populated when the queue item is completed)
- AnalyticsData (populated when the queue item is completed)
The three JSON schemas you can upload in orchestrator correspond to these properties and basically allow an automatic validation of the data in those fields at various stages.
For example, if you have a JSON Schema for the Specific Data when you try to add an item to a queue the input data will be checked to see if it matches the schema, if it does not then the queue item will not be added and a business exception will occur.
The other two schemas are validated when the queue item status is set to ‘Successful’, if either validation fails then the queue item will fail with a business exception.
Hopefully you can see scenarios where this is useful in validating data. Here are some further reading which I think help explain it further.
https://docs.uipath.com/orchestrator/v2019/docs/field-descriptions-queues