BAPI to create change task list

Hi Guys,

1) I want to send data of task list from third party software to SAP. My requirement is to create/Change Functional location task list, Equipment task list, and general task list.

Can anyone please suggest me bapi to do so.. do i need to user different BAPI"s to do this or this can be handled using 1 BAPI only.

2) What all tables and fields do we need to update while sending a task list data to SAP.

3) is there any document which i can refer while mapping my fields with SAP fields?

Thanks in Advance..

Regards,

Ashish