Good Afternoon,
Well, Treasury is made of PRODUCTE types - it is predefined parameters in the system that map specific instruments. Each product type has specific settings/paramenters that can manage only specific financial instruments. You are no able to change such settings/parameters.
For example, 510 producte type is for Deposit. you can do anything that deposit can do!
550 product type is for Interest instrument - simple interests! Here you can map Deposit, Loans, Credits. I used this producte type for leasing - simple scheme of leasing.
And there is product type 040 for bonds, mentioned by Aditiya Hakim. This product has only specific parameters to manage bonds.
So, you have 2 possibilities here:
1. To use 550 product type for bonds. But you'll have limitations in operations with this kind of bonds.
2. To use 040 product type for bonds, Here you'll have all potention of bonds intstrument, as 040 prod. type is made just for that!