question: @ Action ( value = "/receipts/challan-viewChallan" ) @ ValidationErrorPage ( value = ERROR ) @ SkipValidation public String viewChallan ( ) { if ( challanId == null ) receiptHeader = receiptHeaderService . findById ( receiptId , false ) ; else receiptHeader = ( ReceiptHeader ) persistenceService . findByNamedQuery ( CollectionConstants . QUERY_RECEIPT_BY_CHALLANID , Long . valueOf ( challanId ) ) ; setLoginDept ( ) ; loadReceiptDetails ( ) ; return VIEW ; }
target:  This method is invoked to view the challan.