Multiple Security Deposits

Hi Exports,

I need your support to fulfil below requirement.

Business need different types of  security deposits. We have maintained custom Z* Main and Sub Transactions with statistical key "H".

Example:

Security Deposit 1 : Main Trans:ZXX1

                              Sub Trans  ZXX1

Security Deposit 2 : Main Trans:ZXX2

                              Sub Trans  ZXX2

While creation of SD Request system fetching Main and Sub 0020/0020 instated of Custom Transactions. 

Business required Custom Transactions while creating SD.

Please Share your valuable  inputs to fulfil the requirement.

Thanks in advance.

Regards,

Srinivas Pathi