As of Release 3.0, it is possible to import PDC inventory count data from an external dataset into the SAP R/3 System using report RM07IMDE.
This program can process records for which an open physical inventory document exists as well as records for which a physical inventory document has not yet been created.
For more information on report RM07IMDE, please read the report documentation. From the initial screen for the report, you call this up by selecting Help -> Extended help .