Different Transfer's Types in RMS V16.0

Hi all,

Any one as information about different types  of Transfer Types available in RMS V16.0

1.Administrative

2.Reallocation

3.Manual Requisition

4.Confirmation

5.Return to Vendor

6.Intercompany Transfer

Note: Points which i found during my testing the types of transfer

1.Book Transfer is useful for transferring between Virtual WH's

2.Administrative,Realllocation,Manual Requisition,Confirmation, Return to vendor are used with the same org unit

question : what is need of Administrative,manual Requisition,Confirmation transfer,Reallocation transfer Types  seems to be same ,Where actually it differs???

Request to share any information about this functionality