Security Deposits and EMD

Dear Friends,

Any body explain the following please?

The basic settings for EMD (Earnest money Deposit) and Security Deposits. Are both one and same?

When i am giving Sp GL Request in f-37 i am not able to find feild "Tendering Document" as Reference and my SD & Proj Management Colics are wants to give Tendering Document as a Reference while creating a Spl GL for EMD.

Please explain the scenario... I may incurrect .... please correct me...

thank you