Number ranges objects

RV_BELEG - Number ranges for SD documents (SD - sales,deliv and billing etc)
RF_BELEG - Number ranges for Accounting documents  (FI)

You can check in table TNROT (in SE16) - try giving text and search - This table holds all number ranges with description texts.

MM Function modules

MM Function modules:

ME_CREATE_REQUISITION_EXT - used to create Purchase Requisitions

ME_CREATE_PO_HEADER - PO creation header
ME_CREATE_PO_ITEM   - PO creation item

Session time out setting

Check these profile parameters in RZ10

rdisp/gui_auto_logout  - for GUI session time - for eg 7200 sec = 2 hr

rdisp/plugin_auto_logout - for Web UI session time - for eg 3600 sec = 1 hr

Background jobs deletion

Program to delete jobs - RSBTCDEL2
Program to delete orphan job logs - RSTS0024