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 Application Guide for Oracle Self-Service E-Billing (Business Edition) > Versioning Hierarchies > Versioning Billing HierarchiesOracle Self-Service E-Billing saves the current form of the billing hierarchy. Table 80 lists and describes the use case functions. 
 Main Path for Versioning a Billing HierarchyThe following path describes the Versioning a Billing Hierarchy use case: 
 Alternate Paths for Versioning Billing HierarchyAlternate paths can occur in this use case. Versioned Hierarchy is PurgedOracle Self-Service E-Billing invokes the Purge use case. Exceptions for Versioning a Billing HierarchyExceptions can occur in this use case. Oracle Self-Service E-Billing encounters an error during versioningOracle Self-Service E-Billing logs the error in the log file.  | 
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