Quantity increment and decremnt happening to all products at a time in grouped products

[sekhar_n]

i Have created quantity icrement and decrement for grouped products in this location

C:\xampp\htdocs\Magento2\vendor\magento\module-grouped-product\view\frontend\templates\product\view\type\grouped.phtml

but the problem is if click on quantity increment it applying to all products in grouped.individually it is not coming

code

Grouped.phtml

For reference please find the attached images.

[speerio]

First thing i saw in your code is this:

data-bind=""ata-errors-message-box="#validation-message-box"/>

Should be: data-bind="data-errors-message-box="#validation-message-box"/>

re-check the rest of your code to be sure everything is ok.