In exceptional cases relative urls might make sense but absolute urls are recommend by DRF see here

This said you can overwrite get_url in your view (maybe create your own project base view) and pass on request as None so DRF returns relative urls.

This could look like this (just from the top ofof my head without any testing):

def get_url(self, name, view_name, kwargs, request):
 return super().get_url(name, view_name, kwargs, None)

Does this work?

@sliverc no, I added this in my view but still the same.

we need relative URLs in payload because our APIs are behind API-gateway.

@sliverc get_url is not part of a view, it's a part of ResourceRelatedField, so I had to inherit this and override the get_url method.
this way I am able to get relative URLs for related links.

I was thinking you are using relationship view where get_url would need to be overwritten as well.

But of course you also need to do that for ResourceRelatedField. Also make sure that your serializers set serializer_related_field to the new resource related field.