I still recall, when I started using Role Tailored Client (RTC), that one of the things of that really surprised me was the error messages that appeared in the yellow ribbon.
![](https://www.fluxxus.nl/wp-content/uploads/2021/10/6864.SalesOrder_Error_RTC-1024x696.jpg)
Well, it was actually not the message as such, or the yellow ribbon, it was more the fact that the error did not prevent me from moving to another field. Although I did enter an invalid value I could just continue working on other fields. That was totally new to me as, on any error thrown, the good old classic client would block any successive action by a user unless it solved the error, e.g. change the value entered to a valid one.
This memory came to mind when I was reading this useful help topic on the differences between validation on Classic Client and RTC. In the context of my posts on Validating Data I would like to recommend this topic to you.