Today I wanted to submit an update to the App Store.
Unfortunately I had a missing Info.plist key so it got rejected after uploading via Application Loader.
After retrying, I got the message that the current build number is already uploaded:
ERROR ITMS-4238: "Redundant Binary Upload. There already exists a binary upload with build version '1.5.6' for train '1.5.6'" at SoftwareAssets/PreReleaseSoftwareAsset
Now, obviously I need to increase the build number to upload a new binary. Can you tell me how to do that?
I don't want to create a new version every time my app gets rejected...
Not the exact answer to your question, and have never tried this myself, but from this document it looks like you just need a new version number, not a new build number.