Hi, Raj,
While Skuid handles some page-level validation (e.g. making a field required at the page level), Skuid doensn’t have an out-of-the-box feature that handles logic that advanced right now. I would suggest one of two options:

1. Use standard Salesforce validation rule.
2. Write a custom field renderer with JavaScript that handles the validation. (Here’s a bit of info on custom field renderers)

for specific field, where i have to write my custom logic. example: for first name supports only characters not numerics and special characters. for this in field-level, where i have go to write my custom logic means step by step and validation script code

Raj,

As emily said above, there is nowhere in skuid that you can write a validation rule to apply to a field every time you use the field. You can write a javascript snippet and us it as a custom field renderer, but you will have to manually apply the custom renderer every time you use the field.

Here’s the documentation on field renderers: http://help.skuidify.com/m/11720/l/214147-skuid-ui-field-renderers

And the community has lots of examples.

can u pls provide the community likns

Search the community for “custom renderer”.  Look to the right under Related Conversations.