On IBM Planning Analytics with Watson's Privacy Page you can request and collect all the privacy and GDPR related information that IBM Planning Analytics with Watson is providing.
The privacy policy by is a legal document or statement that discloses how IBM Planning Analytics with Watson gathers, uses, discloses, and manges their customers' data.
The basis for IBM sharing, adding, uploading, hosting, accessing or sending personal data out of Europe. Vendors can also add a description of their own impact assessment for data transfers.