System To Digitize And Register In Sap The Non-Electronic Invoices That The University Of Barcelona Receives Through The Accounting And Digitization Unit (Urd) ​​Of Accounting In The Finance Area And The Associated Support Services. The Features Of The System Are: Image Processing (Pdf And Paper Scanning), Extraction And Validation Of Relevant Invoice Data Using Ocr, At Least Up To The Line Level, And Subsequent Accounting Processing Within The Sap Erp, With Traceability And Availability Of The Documentation.