Lets give a fresh look at Developer Key and Object Key: If we know how to check Installation Number of any SAP system then we can verify that installation number remain same across that landscape(example ECC-Sandbox, ECC-Dev, ECC-Quality, ECC-Test, ECC-Production etc). This means if you have developer key for your sandbox system, same key can be used in your development system.
How to check installation Number?
How to check installation Number?
