i am trying to upload a custom B2B app through iTunes Connect, but the "available on the vpp business store" option is greyed out.
Is there anything else i have to do in order to upload my custom B2B application?
Found it! After contacting Apple Developers Support, i got the answer and it worked!
They answered me:
Please be advised that in order to submit a Business to Business app you will need to agree to a paid apps conrtact in iTunes Connect "Agreements Tax, and Banking". A paid apps contract is required even if you intend to price the app at no charge in the business to business store.
Hope this helps other people too...