The process to create a sourcing document comprises of several stages. During each stage of the creation process, you need to supply specific information. Different types of negotiations require different information at each stage. Depending on the complexity of the negotiation, a particular stage might require the inputs and approvals of several collaborators.
You can publish the negotiation only after the negotiation has been approved (if required). All suppliers listed are sent invitations to participate. Approvers on the collaboration team are sent notifications to view and approve the negotiation document.
See: Creating a Solicitation for details on how to create a solicitation.
See: Submitting a Solicitation for Approval for details on approving and publishing a solicitation.