SRI1 and OSRI Relationship!

Hello!

At this moment I am developing a new report for my organization through “QUERY GENERATOR”. SAP BO has tables in which it registers operations with items (handle by serial numbers), these are OSRI and SRI1.

Well, I do have some questions about fields: BaseType, BaseEntry, BaseNum, BaseLinNum, SysSerial and BaseNum from those tables.

1. Which are the main function of the BaseType, BaseEntry, BaseNum and BaseLinNum fields?

2. Do they are related to other fields or tables in SAP BO? i.e. BaseType can reference other tables.

3. Which are the main function of the SysSerial field on both tables (SRI1 and OSRI)?

4. What is the relation between both tables SRI1 and OSRI?

thanks

jssanche