Hi experts. I would like to know what is the best practice for SAP standard programs modifications and enhancements. What must I prefer to use: user exits; customer functions; business transactions events (BTEs); business add-ins (BAdIs); or enhancement points?
And considering I go from SAP ECC to S/4HANA, what kind of modification and enhancement is easiest for migrate?
If you can, list the kind of modifications sorting by the priority of using.
Thanks best regards.