Is there any way to left align the label for text fields ?

It sounds like you want to use labelPosition: "ADJACENT"

The alignment can be applied to text value and labelposition can be applied to text label.
For more information please refer to the link forum.appian.com/.../SAIL_Components.html

No, I have used labelPosition:"ADJACENT" already.
Please look into the attached image. Request No, Location and Vendor No labels should be aligned on the left. Similarly vendorName and notes also should be aligned.

Vikranth,

This is a default Appian behavior where-in the column label with more number of characters seems to be aligned to the left.To make this look aligned , you may use "ABOVE" attribute depending upon your requirement.

You may also wish to review the style guide: forum.appian.com/.../Style_Guide.html