How do i disallow hyphens in my field

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1

I have to disallow hyphens for license plate field in my vehicle doctype how do i do that. I only want to enter data with spaces not with hyphens.
For example
TN-AB-123 i dont want like that, i want to enter TN AB 123 like this without hyphens.
pls help…

2

Make sure your field is not used in the document title or naming series.

3

yeah it is used as naming_series, is there anything i can do for that if not, i would change naming_series to any other fields it would help right? after that what should i do!!!

4

Your document name can not and shouldn’t have spaces.

6

Ok i will change document title to any other fields from vehicle_no, so what should i do to do not include hyphens in the field vehicle_no

7

Nothing, make sure your field type is “data”.
Edit: is this a custom Doctype?

9

its not a custom.