@Archana23 : Understanding your requirement, breaking down in below steps.
1. I believe warranty end date is coming from computer table , if yes then you can use "Auto populate" tab on variable of Warranty end date where you can dot walk end date from computer table field which is reference type.
2. To calculate Warrantly left(in days) variable you need to write onLoad client script call script include where you write logic. Refer this thread for script. https://www.servicenow.com/community/developer-forum/trying-to-calculate-days-remaining/m-p/1681241/...
3. For the validation of If value is in Positive, request should not move further since Warranty is still left for the device. you need to write onSubmit client script.
function onSubmit() {
var inputField = g_form.getValue('variable name'); // replace field_name with the name of the field warrantly left
var regex = /^[0-9]+$/;
if (regex.test(inputField)) {
gs.addErrorMessage("Request cannot submitted");// display an error message if the input is invalid
return false; // prevent the form from being submitted
}
return true; // allow the form to be submitted if the input is valid
}
Hope it helps.
Please mark my response as helpful/accepted if it helps.
Regards,
Priyanka Salunke
