Hi Amit,
A solution is based on Logical Components, so, you can add/change/remove systems from solutions just by changing the assignment of those systems to the logical components that belong to the solution you are using.
It is important to notice that if you are using ChaRM, you should not make such changes while there are open ChaRM documents (Change Requests, Change Documents, Task Lists), otherwise they will become inconsistent. This happens because ChaRM documents are created based on the existing systems at the creation moment of these documents and will work until its completion considering that specific configuration of systems.
So, you have to follow a hierarchy:
- Solution has Logical Components
- Logical Components have system roles
- Systems are associated to Logical Components System Role's
There is no need to get rid of your current solutions. Actually it is not advised to do so, as there are many SAP Support services that are attached to the solutions. By deactivating a solution you would lose those services.
Regards
Valdecir