Solution : https://service.sap.com/sap/support/notes/363790 (SAP Service marketplace login required)
Key words : 
additional key words mr01, conventional invoice verification, logistics invoice verification, assigned document numbers, document number assignment, document number, barcode number, program design, /3 support package, cancel processing
Related Notes : 
       
| 175047 | Causes for FI document number gaps (RF_BELEG) |