SharePoint Form Validation: client-side validation for SharePoint list field data, checking required field, regular expression and validating data range and compare.
Quickly cross-reference data from a list or site then apply a combination of filters to reduce the options presented in menus to eliminate error from incompatible values. Support look up information from "Date and Time" and "Number"columns.
Users can add one or more filters to build multiple cascaded relationships for the Cascaded Lookup column. And no limitation on number of cascading levels.