SAP Message WRF_REF303 - Table conversion failed. Program abort. DOCUMENTATION DiagnosisTable conversation of FRE_DB_ART_SITE or FRE_MD_PRODUCT failed. Thisconversion is necessary after upgrade from F&R Rel. 4.1 to FR rel. 5.0.A reason for this error may be a lock problem or an update error.ProcedureTry again