Cannot upload objects to a bucket despite of having a valid billing account

Question

I have a bucket that has "requester pays" feature enabled. I have a billing account enabled but I cannot upload objects to the bucket. Why does this happen? What is missing?

Answer 1

The requester must have sufficient permission to perform the requested action. 

A user that provides a valid billing project in their request cannot upload objects to the bucket unless they also have explicit permission to do so, such as by having storage.objects.create permission for that bucket or the project that contains it.

For a detailed understanding refer to https://cloud.google.com/storage/docs/requester-pays

Hope this helps!