too many nonamp in crawled pages

Hi, thank you for reaching out to us. As we checked your concern, it seems that “?namp=1” corresponds to a non-AMP URL, while “?amp&nonamp=1” represents the actual AMP URL. Could you please specify when you began encountering this issue and where exactly it is appearing? Additionally, have you made any additional changes in settings recently? Please provide more details so that we can investigate further on our end as well.

unfortunately the links are too many, and the direct cause is unknown, instead, can you tell me under normal conditions what is needed for a page to receive “?nonamp=1”?
is it set manually?
if it is automatically set what do i need to do to apply one>

Hi, no, it’s not set manually. Could you please elaborate on what exactly you want to achieve? That way, we can provide you with an exact solution.

basically decrease the number of URLs with nonamp in semrush, im trying to understand how nonamp is applied, so that I can avoid doing so

Hi, thank you for letting us know. Please follow the below steps:

1. Go to the AMP settings.
2. Click on the Advance setting and search for the “Change End Point to ? amp” option.
3. Enable that option and save it.

Please refer to this screenshot also: https://paste.pics/QDFLX

Check this option once and let us know after some time indexing happens.