I am using Apex 4.1.0.00.32.
I want row level validation in my Tabular form.
I fallowed this link for it.
But still the validation is not working fine.
I am not getting this part In the conditions section, select "all submitted rows" in the execution scope list box..
I am not clear - are you not able to locate the "Execution Scope" option? If that is the case, you need to select the "tabular form" option when creating the validation and then, validation level as "Tabular form row".
If your question is specific to the validation not getting executed correctly, please provide details of the steps in your question. There are a number of threads in this forum that talk about Tabular Form validations.