Manage Preferred Supplier Lists
App type: Transactional
Description:  With this app, you can create and manage lists of suppliers that your company advices you to use during the sourcing process. This includes standard supplier lists that are available for all users, as well as user-specified supplier lists that you create for your own use. The supplier lists created with this app can be used to assign suppliers to sourcing projects in the Manage Sourcing Projects app, for example. While standard supplier lists always refer to at least one material group and company code, user-specified supplier lists are assigned to a specific material group only. You can create a supplier list, by selecting one or more material groups and company codes or for all company codes. 
An application to maintain a list of suppliers for one or more material groups and company codes
Key features:  You can use this app to:   Search for supplier lists by using different filter criteria.   Display and edit existing supplier lists that are visible to you, subject to the authorizations that are available to you.   Create standard supplier lists for common use or user-specified supplier lists for your personal use. A user-specified supplier list allows you to configure your supplier list by adding suppliers that you prefer to work with.   Define the visibility of your user-specified supplier list and set it as public. A public list is also available to other users.   Convert user-specified supplier lists into standard supplier lists by maintaining additional details.   Delete supplier lists. Deletion is only possible for:   Latest version of the specific supplier list     A standard supplier list that is not in use by a sourcing project   Note You can delete a user-specified supplier list only if you are the owner of this list, that is you created it.   Activate a supplier list that is in preparation. Once you activate a supplier list, it can be used by a consuming app or business object, for example, a sourcing project.   Deactivate the active version of a supplier list if you want to prevent it from being consumed by a consuming app or business object, for example, a sourcing project.   Propose to add suppliers to a supplier list or propose to delete them from existing lists.   Propose to add or delete company codes in an existing supplier list. You can also view a summary of the acceptance or rejection of your proposals.   
Business roles: Purchaser| Strategic Buyer| Sourcing Manager
External Auditor - Procurement: (is an add-on role to the External Auditor)
Reviews and checks archived documents like purchase orders, material documents and logistic invoices.

Strategic Buyer : 
Manages the supplier portfolio effectively.

Purchaser : 
Ensures that demands of materials and services are fulfilled by creating and monitoring purchase orders.

Purchaser - Central Procurement : 
Carries out any centralized purchasing activities across a customer's multi-ERP procurement landscape from a single, central procurement hub, including demand aggregation, centralized sourcing activities and negotiation of central contracts.

Sourcing Manager : 
Plans and carries out all the functions related to strategic sourcing of specific categories of material or services in his organisation.