Whether built into your public website or integrated with your internal systems, this API can help you reduce operating costs and improve customer service.
The API requires XML/Web Services programmers to code and integrate.
It uses routines, often called "validation rules" "validation constraints" or "check routines", that check for correctness, meaningfulness, and security of data that are input to the system.
There are other ways to highlight the field in question besides changing the text color, the border color or the fill color could be changed instead, or in addition, just make sure that you are not making the form impossible to read.
Then we select the “Validate” tab to see the validation options: The default is that the field will not get validated.
For numeric fields, there is a convenient way to validate a value range, but we want to select to run a custom validation script.
When you play around with the function, you’ll notice that the validation function is only called when the focus leaves the field, so you have to click outside of the field to actually make that error message pop up.
In that case, the previous value of the field is restored, and the user has to enter the data again.
So, if the user enters ‘01234’ we should see an error message that would instruct the user about what type of data is valid for this field.