So you know how to use OY19 to see and compare cross system customising objects and you know how to use SE39 to see and compare an ABAP program across systems. But do you know how to search and compare all ABAP objects across a system?
For example you have made a system copy and want to compare all Z* and Y* programs?
You can do this with Transaction Code – SREPO - Repository Comparison.
1) Select the RFC destination (you can use SM59 to do this).
2) Select “Customer Objects and Modified SAP objects”
Then follow the wizard.