Solution : https://service.sap.com/sap/support/notes/188809 (SAP Service marketplace login required)
Key words : 
symptom sdinvofm displays incorrect information, additional key words sdinvofm, attached program correction, program error, vofm routines, class tdat, data transfer, routine exists, solution implement, prerequisites
Related Notes : 
       
| 28683 | PERFORM_NOT_FOUND: VOFM routine is not active |