SAP Program CRM_LEAS_BILL_REVERSE - Cancellation of Order-Related Invoice in R/3

Purpose
This program is used to reverse billing documents in R/3 SD that weregenerated by program CRM_LEAS_BILL (transaction CRMD_BILLING). Suchbilling documents must never be reversed directly in R/3 SD, asinformation about the performed reversal would not be updated in theCRM items, which means the billing request items in the leases couldnot be billed. In contrast, this program ensures that these statusupdates are performed in the CRM items and that the document flowinformation is defined.
You can only reverse the complete billing documents, not single itemscontained in those documents.