is there any way to modify the validation error message thrown by Salesforce to Skuid page ?

Unfortunately there is not a good way of doing this (Other than adjusting the validation rules you set up in core salesforce setup…)

Hello KVin - As Rob mentions, there is no good way of doing this currently.  I’ve had this need as well and created an idea at https://community.skuid.com/t/component-messages-enhancements.   Feel free to vote for this if it’s something you would find useful.

+1 Barry.