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Cannot pass negative number as argument using fetch POST

Im trying to use fetch (method=POST) arguments like quantity=1 works fine: enter image description here

but when it comes to negative numbers like quantity=-1 im getting status 400 response:

enter image description here

What is possible cause of this? Is it that website stop me before doing this or do i have to do it in other way?

about 4 years ago · Juan Pablo Isaza
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The page server (backend api) rejected my request because the conditions were not met. For example, if I sent a request to delete data that can only be deleted by the author.

(I tried here to "sell" negative numbers of things so i would receive it for free. Authors of this website/game predicted that some users would workaround/hack it like this hahah)

about 4 years ago · Juan Pablo Isaza Report
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