Paul Andrew shows what happens you you break the ADF concurrency barrier:
Firstly, understanding how these limits apply to your Data Factory pipelines takes a little bit of thinking about considering you need to understand the difference between an internal and external activity. Then you need to think about this with the caveats of being per subscription and importantly per Azure Integration Runtime region.
Assuming you know that, and you’ve hit these limits!
Click through to see what happens. It’s not pretty.