Der Krishna
please check SAP marketplace. You will find very useful pdf file to understand the options of the new OCC version. Refer to the link i provided. In some of the threads the link (reference to OSS note) to this pdf file is provided
Shortly: you can usenow XML files to do the upload or "EXCEL" like tables structures.
High level: The OCC can be used to load what you would like to load; Originally the OCC way more or less related to "legacy" upload only; but in theroy you can upload e.g. denisity, flashpoint etc.
C.B: