Hypertext: Object Class - Class to which a document belongs.
Document Name
W_WLFA_0009
In this step you create the reasons you want to use in billing document processing.
Enter an alphanumeric key of up to four characters for the billing reason.
Give the key a text that describes it.
If you want a default reason in your documents, you can maintain a default value in the billing document type. This can be changed at any time when you are processing the individual documents.
The transaction billing reason appears for information in the accounting documents, so that accounting staff can always see why the document has to be created.
Example
When a document is cancelled, you want to enter a reason for the cancellation in the document. You would therefore maintain a reason corresponding to the case in hand and enter a description. You then assign the reason to the reversal billing document type. The system will then suggest this reason when a reversal document is created and also pass it on as information to the accounting document.
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 
