The Routine is meant for to check a requirement for copying a document to sales order or picking up the orders which full fills certain conditions for archiving.The standard SAP system contains some standard routines for checking requirements when copying the objects, Also the customer or user can define their own routines accordingly. For example If you copy a quotation to a sales order, the system can check every quotation item to ensure that the customer had not rejected them for any reason.
The view V_TVARA you can maintian this under the application specific customization for SD_VBAK archiving object using SARA t code.