UPS has implemented an OAuth 2.0 security model for all APIs and deprecate the existing Access Key-based authorisation. See https://developer.ups.com/oauth-developer-guide
Due to a massive storm of spam, registration on this instance now requires explicit administrator approval. Sorry for the added friction, we're also looking into automatic filtering options.
UPS has implemented an OAuth 2.0 security model for all APIs and deprecate the existing Access Key-based authorisation. See https://developer.ups.com/oauth-developer-guide