Hypertext: Object Class - Class to which a document belongs.
Document Name
W_WLFA_0019
In this step, you define the application statuses, define status groups, and assign the application statuses to the status status groups.
Application status: An internal system status is assigned to each application status. The system status defines whether a follow-on document can be created or not. The application status enables you to define the reasons for the system status, such as follow-on document cannot be created because profit from the business transaction is too low. In Customizing for the payment type, a default status can be assigned to settlement requests and settlement request lists.
Status groups: A status group is a number of application statuses that a document can have. In the sub-point "Status for Group", the application statuses are assigned to status groups. An application status can be included in several status groups.
Hierarchy 
SAP_APPL (Software Component) Logistics and Accounting
MM-IV-GF (Application Component) General Functions
MR0C (Package) Customizing R/3 Invoice Verification
IMG Activity 
Document 
History 
